Palm and Sprint might have a pickle on their hands. Now that the Palm Pre is the hottest upcoming phone of 2009, how are they going to sell the Treo PRO when the Pre is rumored to launch next month? Sprint thankfully has priced the PRO well with to a $200 price cut and a $100 MIR which brings the MSRP down to a respectable $249. Still, Windows Mobile on the PRO or the sexy, new webOS powering…