First, that huge explosion was the Minerva's Tannahauser.

Second, isn't the nuclear reactor of the freedom in the pelvis?

Third, how the hell did Mwu survive?!?!?!?!?!?!?!?!?!?!?!?!??!?! His MS blew up, and his helmet was floating in space. He should be blind, not just some wimpy scars.