Question: When did Paul Ellering return to manage The Authors of Pain?

Context articles: Temporomandibular joint dysfunction
Pleasure &amp; Pain (112 album)
Paul Brand
Pubsoft
Paul Ellering
Rachel Morris (cyclist)
Referred pain
Williams Flexion Exercises
The Authors of Pain
Chronic fatigue syndrome in children

Temporomandibular joint dysfunction (TMD, TMJD) is an umbrella term covering pain and dysfunction of the muscles of mastication (the muscles that move the jaw) and the temporomandibular joints (the joints which connect the mandible to the skull).
 The most important feature is pain, followed by restricted mandibular movement, and noises from the temporomandibular joints (TMJ) during jaw movement.
 Although TMD is not life-threatening, it can be detrimental to quality of life, because the symptoms can become chronic and difficult to manage.
Pleasure & Pain is the fifth studio album from American R&B group 112 named after the song "Pleasure & Pain" on 112's 1996 eponymous debut album, "112".
 This album did not fare as well as their first three albums, but the album did manage to spawn one hit single in 2005; the single "U Already Know" peaked at #32 on the "Billboard" Hot 100, while the second single "What If" reached #74.
 It was the first 112 album to get a Parental Advisory sticker (although a few songs from earlier releases contain profanity as well).
 The single, "U Already Know", has two official remixes, the official Murder Remix featuring Ja Rule & Harry O and the official Roc-A-Fella Remix featuring Foxy Brown.
Dr. Paul Wilson Brand, CBE (17 July 1914 – 8 July 2003) was a pioneer in developing tendon transfer techniques for use in the hands of those with leprosy.
 He was the first physician to appreciate that leprosy did not cause the rotting away of tissues, but that it was the loss of the sensation of pain which made sufferers susceptible to injury.
 Brand contributed extensively to the fields of hand surgery and hand therapy through his publications and lectures, and wrote popular autobiographical books about his childhood, his parents' missionary work, and his philosophy about the valuable properties of pain.
 One of his best known books, co-written with Philip Yancey, is "Pain: The Gift Nobody Wants" (1993), republished in 1997 as "The Gift of Pain."
Pubsoft is a cloud-based eBook publishing platform headquartered in Houston, Texas.
 It serves as the publishing engine for Kbuuk, LLC, a self-publishing software company that provides digital conversion, distribution and marketing services for authors.
 Pubsoft is designed to allow publishers to create and manage an online eBook store for direct consumer sales.
 Publishers can also use Pubsoft to handle social media marketing, deliver eBooks to mobile devices, manage author and reader relationships and distribute royalties through an administrative portal that uses PayPal.
Paul Ellering (born August 22, 1953) is an American professional wrestling manager currently signed with WWE on the NXT brand and formerly a weightlifter, professional wrestler and dog musher.
 Ellering spent most of his wrestling career managing the Road Warriors (Animal and Hawk), working with them from 1983 to 1990 and again on occasions between 1992 and 1997.
 In addition to being their on screen manager he actually handled the team's affairs outside the ring as well, including contract negotiations and travel arrangements.
 Ellering and the Road Warriors were inducted into both the Professional Wrestling Hall of Fame and the WWE Hall of Fame in 2011.
 Five years later, in June 2016, he returned to the ring at as the manager of The Authors of Pain, a heel tag team making their debut.
Rachel Morris {'1': ", '2': ", '3': ", '4': "} (born on 25 April 1979) is a British Paralympic sportswoman who has won Paralympic gold medals in both cycling and rowing.
 She took a gold medal at the 2008 Summer Paralympics as a handcyclist, and eight years later at Rio she won gold in the women's single sculls as a rower.
 She lost both her legs to Complex regional pain syndrome and cycles, in part, to manage the pain.
 She was born in Guildford, Surrey.
Referred pain, also called reflective pain, is pain perceived at a location other than the site of the painful stimulus.
 An example is the case of angina pectoris brought on by a myocardial infarction (heart attack), where pain is often felt in the neck, shoulders, and back rather than in the thorax (chest), the site of the injury.
 The International Association for the Study of Pain has not officially defined the term; hence several authors have defined the term differently.
Williams flexion exercises (WFE) — also called Williams lumbar flexion exercises or simply Williams exercises — are a set or system of related physical exercises intended to enhance lumbar flexion, avoid lumbar extension, and strengthen the abdominal and gluteal musculature in an effort to manage low back pain non-surgically.
 The system was first devised in 1937 by Dr. Paul C. Williams (1900-1978), then a Dallas orthopedic surgeon.
The Authors of Pain are a professional wrestling tag team performing in WWE's NXT brand.
 The team, managed by Paul Ellering, is composed of Akam and Rezar.
 Their names are a play on the principle known as Occam's razor.
Myalgic encephalomyelitis/chronic fatigue syndrome in children is a lingering and debilitating illness that produces a variety of debilitating effects in children and adolescents.
 The major findings and characteristics of this disease is fatigue, body, muscle pain, joint pain, cognitive deficits, disturbed sleep, and headaches.
 As in adults, there is no cure or approved treatment for myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) in children.
 However, some symptoms can be treated or managed.
 Treating these symptoms might provide relief for some patients with ME/CFS but not others.
 Other strategies, like learning new ways to manage activity, can also be helpful.