I seriously don't know how that happens ... Did you guys use bombastic's Trinity? You should.
Same here(doing FomMaximum)..forgot to mention I am using Bombastic's Trinity.. works fine under fomnormal that I can tell but could this have anything to do with it? I noticed some slight differences in the crypt profiles between max and normal..
FomMaximumcrypts.xml has
<!--Trinity Explore Decaying lvl 1-->
<!-- Stuck preventors, shamelessly copied

-->
and..
<ToggleTargeting questId="1" stepId="1" combat="True" looting="True" killRadius="70" lootRadius="200" />
<TrinityExploreDungeon questId="136656" stepId="1" boxSize="27" boxTolerance="0.18" pathPrecision="20"
while FomNormalcrypts.xml has
<!--Trinity Explore Decaying lvl 1-->
<ToggleTargeting questId="1" stepId="1" combat="False" looting="True" killRadius="120" lootRadius="200" /> <--this line added
<!-- Stuck preventors, shamelessly copied

-->
and
<ToggleTargeting questId="1" stepId="1" combat="True" looting="True" killRadius="70" lootRadius="200" />
<TrinityExploreDungeon questId="1" stepId="1" boxSize="27" boxTolerance="0.18" pathPrecision="20" <--quest ID is changed..
hoping that this may be the cause of it, since it looks like a simple copy paste would fix it. Going to wait on reply before I go messing with things I don't understand..lol