I didn't see this thread until TC bumped it, but I've got an eerily similar story from this past spring.
I was skiing through Okemo's intermediate glade (stop snickering!) with a large class a day or two after a storm in early March. When we exited the trees, my junior instructor skied over to me and handed me a silver and black Motorola RAZR, saying, "You dropped your phone back there." At first I was ecstatic, because I've been on the verge of being dropped by my phone insurance company ever since cell phones were invented...then I realized my RAZR is all silver and was still in my zipped pocket. Unable to find any identifying information on the phone, I dialed the last number in the recent calls menu, which turned out to be someone's wife. Apparently the hubby didn't even realize his phone was gone, but he ended up being reunited with it later that day.
Fast forward to Cinco de Mayo at Killington. This time I really did lose my phone, but didn't realize it until the day had ended and I was back in Ludlow. The next morning, the phone rings at the ski house - a Killington lifty had my phone!
Ya gotta love karma.
I also managed to return a dog that followed me from mid-mountain this season, but that's a whole 'nother story!