He very well might have answered that question on his TNA DVD:
As you can see above, he didn’t like the way Booker T and other former-WCW’ers were handled during the inVasion ten years ago. Yes, ten years ago.
Kinda hard to blame him…
http://www.youtube.com/watch?v=3atuxhDFGLE
http://www.youtube.com/watch?v=AHQcZ1CerkI