I was mining iron at the time and saw it happen.
Hapukurk did jump the bag.
To be fair though you were all a bit sloppy about covering the bags. i noticed that there were a few times you left them open for longer than was safe.
I'm not trying to say that he was right. Just that leaving a bag with your feasting potions in unguarded is a bit of an open invitation.
Again I'm not saying you were in any way in the wrong here, just suggesting you be a little more careful in future.