Conversation so far:
When did A.J.
Styles return to the independent circuit?
On March 14, Styles returned to International Wrestling Cartel (IWC.
Did he leave it again in 2005?
On April 1, 2005, Styles returned to PWG.
What is PWG?
CANNOTANSWER.

Question: What was a major event for him during this return?
Self-contained rewrite: What was a major event for AJ Styles during the return  to PWG in 2005?