Actually, upon reading the ESPN article, it seems to me the Clippers do want Griffin--meaning that they'll most likely aggressively shop Zach Randolph or Chris Kaman (if Randolph's contract/bad attitude doesn't allow him to be moved). He is the BPA after all. But I don't think this stops Memphis from getting Rubio--they sorely need a great lead point guard, and Conley has disappointed on many levels and they're not going to hesitate to trade him if they have the opportunity to get Rubio. They also need a big swatter so they might look at Thabeet in order to move Marc Gasol down to PF, but I don't think they're looking in that direction as Rubio is probably too enticing for them.
Either way, Thabeet would most likely be drafted 3rd still, but hypothetically, if Memphis somehow wants Thabeet and drafts him there, I can't see OKC passing up on Rubio either--he's an unselfish pure PG who can orchestrate their offense, as Westbrook's not a pure point, so they'd happily snatch him up on the off chance he falls. Which means that, it's near impossible to get Rubio.