I say yes. Especially in the case of Terrorists surviving and the bomb is defused.
This saving a gun thing is a load of shit, especially for an awp. You lost, the other team completed their objective, why should you get to keep your gun?? It's basically rewarding failure and cowardice. Consider your expensive guns to be like a muscle; use it or lose it. Complete the objective or die trying. It isn't just about 1 player and the last 30 seconds, it's about the whole team and the whole round, for having let it get to this 'lost cause' point.
ru is right about the 'unfair 10 v 1' thing, how is someone going to ever win 10 v 1 if they won't even fucking try?