From F4WOnline:

TNA is doing a storyline where Rob Van Dam vacated the TNA title due to injuries suffered from the Fortune and friends beat down of him at last night's tapings. They filmed a segment of Van Dam going out in an ambulance and are doing an injury angle.

They will be doing an eight-man tournament that will end on the 9/5 PPV show. Four first round matches will be taped on tonight's show including Kurt Angle vs. Douglas Williams.

To me this is absolutely ridiculous. They take the belt off of AJ to give it to RVD, who was clearly not happy about it:

I definitely didn’t understand it. For the life of me, I couldn’t understand it. I was very surprised that I would lose that title after holding it for so long, and to somebody who has basically been out of wrestling for over a year, and was coming in from WWE. And he should have been tired from wrestling a match before that. It was like I’m not the star I thought I was. I guess I’m just a guy in TNA.

Now they cut the legs out from him after less than 4 months? To book a tourney? No one ever cares about tourney for belts! Just another reason why TNA's going in the crapper.