Reading this thread, It is fairly clear that Craig did understand the physics, apparently much better than me. Also Krauss has not been honest. That was a very revealing exchange:
It normally doesn’t work to pin someone down for a retraction (does not work). It usually only makes sense in much higher stakes situations (like I currently am in 
). In this case, just point out this thread the next time @Patrick or anyone else makes this claim again. Honestly, I think @Patrick got the point, and doesn’t plan on making that claim again.
I’ve known @Patrick for a couple months now. Just offer him an olive branch, be kind to him, and move on. Looks like you one handily.
This however is not helping things. Be a gracious winner.