Hmmmm going try that latter....WITH MAMMOTHS...but serilious i dind't get it.You need to run enough from them?
When he jumped onto that rock where the wolf couldn't reach him and went into sneak mode, it kind of 'broke' the AI. Since it has trouble finding anyone in stealth mode to begin with, and was further stressed by attempting to fight an unreachable target, it basically 'reset' due to inability to resolve the conflict*. As such, it becomes passive, and no longer obeys its 'return home' routine, which normally forces it to return to its spawn point if pulled too far away, but at the same time ignores its 'aggression' routine and thus will not attack in your support.
*The AI has an algorithm for determining targeting priority, and as both the 'concealed' and 'out of range' states cause it to search for the intended target/way to reach same if no other is available, they have the same priority when the AI attempts to determine how best to proceed (it always uses the most favorable option if more than one applies). As a result they conflict with one another, but because there is no alternative target there is no way to resolve this, which basically forces the AI to shut down in order to avoid an infinite loop. Since the path-finding and following routines are handled separately, it remains locked on to the last target and will follow it no matter what, as it no longer considers doing anything else.
NOTE: this will
not work on NPCs, as they have additional checks that prevent this from occurring.