I agree with the above statement... However, you have to add to the fact... has he min raised with an all in stack before? I think thats what he's saying. Say he had a big stack and min raised but then lost a big pot and min raised again, he could still think he has a big stack and is afraid to commit all his chips preflop with a hand like QJ,KT,KJ,A9 etc... or even AK. OR he could be trapping w/ a monster like AA. If this is the first time u've seen him do it, like said above, just fold, otherwise stop and go.