I think Moochie and Kilgore Trout have hit on the more logical answer. IMHO it's too coincidental that there's a big lawsuit pending just when a lot of material that's possibly been infringing on copyrights is being taken down.
While I have no doubt that Geller or his representation have been trying to get Uri-exposing vids removed through any method they can, it's a lot more likely that someone at YouTube, in the face of the Viacom suit, is going back and finally looking at the huge pile of copyright infringement protests they've received over the years, and taking down doubtful material. They've probably been consigning complaint notices to "file 13" for years, and now want to show that they're making an effort.
There was much hue and cry about "victory for the good side" on the CT boards last week that a lot of YouTube and MySpace videos were being removed, apparently for the same reasons. YouTube doesn't have the resources to check every item, so in a broad-brush defence, they want to be able to say in court, "Well, any time a possible copyright infringement is raised, we remove the offending item until the poster can prove he/she has rights to the material or that it's in the public domain."
It's sort of like proofing 70 year olds at Shea Stadium. No one really thinks the guy with the walker looks to be under-aged, but if you can defend yourself by saying "we proof 100% of our customers", no one can accuse you of lax standards.
I'd love this to be proof of over-reaching by Uri and his evil minions, but I think it's more likely to be YouTube catching up on reams of old complaints.