All situations are unique. Against Illinois, it was fourth and goal from the three. Do you turn the ball over on downs, giving Illinois a shot to break up the well-earned shutout? Do you kick a field goal, which is pretty insulting? Or do you give Illinois a chance to win the ball back on their own merits, while challenging your red-zone impaired offense to hammer one home? Tough call, and I wouldn't call it classless.
What is it decidedly not is a 50 yard bomb. Now, Neuweasel did bring it on himself, somewhat. If he doesn't call a time out, the game ends at 21-7. By calling a time out, he's expressing to USC that he doesn't think the game is over. Fine, you keep playing, earn a first down and run UCLA out of time outs. At the same time, no team is entitled to having the winning team roll over and play dead for them, so I won't fault Petey too much for calling a play that clearly worked.
Was it the classiest thing he could do? Not exactly. Pete Carroll does not normally choose the classiest route available (see Sanchez, Mark), and his celebration was kind of ridiculous, as was the taunting. That doesn't make him an awful person or the worst coach in America. It's just an over-reaction to a perceived slight, sort of as if one were to react to a visiting fan trolling your message board by revealing his email address, real name, place of work, photographs, getting him fired, subscribing him to questionable magazine material, and ultimately making sure that the whole mess is the first thing that comes up when you Google his name.
So, I guess you could say that UCLA has been Neuheiseled.