Try the Holiday Inn at 219N and I68. Not too far from Wisp.
Look up hotels in Deep Creek, McHenery area...I am sure many are not full tonight. And call the Wisp Resort in about an hour and I suspect that the hotel there will give you a good rate for a single night tonight...assuming they have rooms available. Just argue about the two night policy a bit, and if they have a brain in their head...one nights lodging beats no revenue for an empty room, especially when conditions are less than great.