That proved to be the case, as Moxley debuted at the conclusion of Saturday night's Double or Nothing pay-per-view. After Chris Jericho defeated Kenny Omega in a grueling finale, Moxley jumped the rail and assaulted Jericho, while his former WWE nemesis was in the midst of a gleefully self-indulgent promo.
After dropping Jericho and referee Paul Turner each with a Dirty Deeds, Moxley brawled with Omega up the aisleway. Moxley won that battle, depositing Omega with Dirty Deeds atop a giant poker chip stack that was part of the set design. He then concluded the attack by throwing Omega off the stack with a release death valley driver, like John Cena's AA.
Moxley's last WWE appearance came on Sunday, April 21, when he, Roman Reigns, and Seth Rollins defeated Baron Corbin, Drew McIntyre, and Bobby Lashley at a live event in Moline, IL, aired on WWE Network as "The Shield's Final Chapter."
UPDATE: Cody Rhodes confirmed at the post-show press conference that Moxley has signed a multi-year deal with AEW.