I don't know if he fumbled on anyone but Punk.
Jade made it clear that WWE offered far too much opportunity and on a bigger stage for her to turn down.
Even Cody having an executive position and a small ownership percentage isn't going to rival a company as big as WWE and therefore the money, exposure and outside opportunities were always going to draw him back IMO.
Punk is different though. Had Tony handled that better I don't think Punk would have ever gone back to WWE even after Vince left since he would have still been under contract.