The evil twin moving twice was... weird, so I undid that.
As for the evil twin rules, Proposal #36 stated that an evil twin goes to the Null Space when their square is destroyed, so I would have to assume that was a modification to what was specified in Proposal #19 that evil twins must always be on the M-board. After all, that's the interpretation that would be most consistent with the proposals that have been accepted, since there's nothing that specifies what else could happen when an evil twin's square is destroyed.