True to an extent but both Tito and especially Jenna have gone around and smashed Dana every chance they get, for further evidence check out Jenna Jamesons myspace page, she has a blog on there about him that I read awhile back and to say it wasnt flattering would be an understatement. Keeping that in mind, Dana has a huge ego and probably feels he doesnt need Tito to keep making money so I wouldnt be shocked if he didnt even give a real attempt to sign him but only one that makes it look like he tried and put Tito in the spot to look like the bad guy. Technically Tito hasnt turned in a solid fight in over a year, he had 2 straight fights with Shamrock and those were terrible, then he had a real lackluster performance against Rashad and then took time off to do the Celebrity Apprentice so he hasnt done much anyways, so Im sure Dana wont miss him.
EDIT- Apparently mmaweekly.com jumped the gun a bit and the Bisping vs Leben fight is only a rumor at this point and neither fighter has actually signed for that fight, so as of right now its not official as I had previously thought.