AJ is currently the IWGP World Champion, he gets checks that never bounce and probably for more money from NJPW, even without Japan he's the biggest thing on the independent circuit and still probably making more money than he was with TNA. It should also be noted that he also kinda encouraged a "fuck TNA" chant this weekend, a chant that none of the now former TNA mainstays seem to oppose. So no, I can't see it happening.