Complex sentence: The 12th Man addition to the ring was the last to be added in the RCA Dome, and is currently in violation of the agreement in place between Texas A&M and the Seattle Seahawks regarding the use of the trademarked term.
Split into simpler sentences: The 12th Man addition to the ring was the last to be added in the RCA Dome. It is currently in violation of the agreement in place between Texas A&M and the Seattle Seahawks regarding the use of the trademarked term.