I don't know what Vijay possibly has to gain by suing the pga,
http://espn.go.com/golf/story/_/id/9...ticks-pga-tour
More and more, that guy comes across as one of the bigger jerks in sports. I expect some rather intense heckling this weekend.
Getting kicked off a tour for intentionally lowering his scorecard was probably all the proof needed that he doesn't belong in professional golf.