I was actually on the same flight last night, and I thought they handled it very well. I had a friend who was finishing his trip in PIT, and they got him there on DL. I was connecting in PIT to PHL, and US put me up for the night in the Westin, gave me food vouchers, and confirmed me in F on the first ATL-PHL this morning. I was quite pleased with how they handled the situation. ^