I was at the Screeching Weasel show last night, and I spoke to him at the airport today for a bit.
He overreacted but it wasn't just from heckling or something. He flipped out after the girl spat her drink in his face (after she had already thrown beer--a lot of it--and icecubes at him). He's losing money because of the cancelled dates but is making it up to the other bands, crew, etc, out of pocket.
I wouldn't trust anything coming from the management of the place, as they wanted him off stage long before any shit went down (since he kept talking about how dirty the green room was, how they were ripping off the bands and the audience, etc). The girl left the show but the management called the cops.
Jim DeRogtis's take on what happened is pretty good.
Screeching Weasel was my favorite band when I was 14 and I still think they're good. I missed the WFMU showcase AND the Goner party because I went there, and I didn't like the opening acts.
It is odd, the different attitude different bands have towards beer-throwing. I saw a Personal & the Pizzas show where their shit shorted out from all the beer, so they just stopped playing. I also think they were too drunk to continue. Also I've seen plenty of obnoxious Gallagher-style bands that made me almost throw up from all the disgusting shit they spat at the crowd.