The exact duration and wording of Sprint's exclusivity agreement with Palm for the Pre has everyone wondering -- perhaps no one more than the carrier's competitors, who are blatantly champing at the bit to steal Sprint's thunder and launch new Palm hardware of their own. Sprint had already officially refuted Verizon's claim that it'd get its own Pre in "about six months" by saying that the deal lasted through 2009, but now, none other than Sprint CEO Dan Hesse is taking a swing at his archrival, saying Verizon needs to