Well, there has been errata to this specific issue since the question was posed, because the question was asked.
I refer you to this thread, which is where most of the discussion was:
viewtopic.php?f=4&t=38443&start=10And RRGs conclusion was:
According to the current wording, last man standing is no-holds-barred in terms of timing. The wording for last man standing will change to "...the remaining model removes all fatigue, and may activate at the end of the clear turn." This restricts the clear turn to the first portion of the turn, which should mitigate some of the order of operations issues.