I dont think Scott seemed pissed afterwards, but if he was it was probably because of the feedback. Thats something that should be figured out during soundcheck and/or by the techs.
Dean's guitar sounded like shit, IMO. Either it was the mix (possible), or his pedal or tone selection was just bad. Maybe it was just my TV (wife was on the good TV/stereo). I'll have to check out a mpeg when someone gets one and play it through better speakers.
I thought the performance was pretty good on the whole too. Scott came in slightly off key on the first line or two, and then was on after that. Pretty good performance all around, I'd say.