I believe he was. At this point,he knows what's going to happen and figures he's got nothing to lose by trying. Given the number of guys surrounding him I don't see him trying to take them all on, but rather grabbing one of them as a hostage (the best choice would be Tom) and trying to make it out of the compound alive. Needless to say, he would still be a dead man, but desperate as he was, I guess he figured that it would be better to try something,anything, as opposed to just taking a couple behind the ear without a fight.