No, he got there in the last minute and couldn't figure out what they had done. He needed to be there in the beginning to know what was happening.
He is the only one I feel had nothing to do with the crash. He was taking his required rest. The two FO's got it into the stall situation it was in. It was too late for him to fix it.
Maybe I wasn't clear enough; because that doesn't answer my question: Doesn't the fact that he told the pilot not to climb, point to that he was aware of them being in a stall?
Also the claim you make that he had to be there to know what was happening doesn't really jive what I have read in this thread. Shouldn't he have been able to tell they were in a stall judging from the loss of altitude? And why didn't he resume the control of the airplane? Why did he just stand there?