All he did last night was fall back into weakly constructed philosophical arguments. That's all he had because that's who he is. A Marxist true believer who has gotten by in life and has been resolutely protected by a fawning, corrupt MSM. Obama was simply unmasked last night.
Your observation is about as close as any can be. I’d simply add one further thought; He’s a creation developed by Marxists (look who wrote his biographies) to wedge him into the presidency. He actually believes the hype written and disseminated about him, because it’s all he’s ever heard, and he believes in those who built him up.
Last night, however, we saw the real Obama, who, when faced with real opposition, has no experience in dealing with adversity, and no real depth of confidence in himself. I suspect he learned something last night, and it’s going to bother him for some time.