So we know Dave's a hothead, people might jump to conclude Dave just flew off the handle again and fired this guy. I think what you're saying is, we don't know the whole story. Maybe the tech really was incompetent, maybe his firing was completely justified. Maybe it was a long time coming, not just based on one bad show, and this guy finally ran out of chances.
AGREED!! No matter how bad he was. You fire him privately and move on... like the PROFESSIONAL he should be after all his years in the biz. You don't go on the internet and unload your anger to the public like a pissed off teenager.