Maybe its because he is being cut down piece by piece? Its like fighting one of those huge rpg bosses in video games where the first few times you have to run away as soon as possible, but eventually you are able to weaken him over time until the final battle where you can finish him off. First the GAP did damage with the rope through the throat trick, causing some lasting damage, then forgath did more damage to both him and his gear, then we had the golem bash kore around and cause a LOT of damage. Now he is missing his armor, his weapons, and is gravely wounded. Badly enough that HE fled the fight. He is on his last legs and cant afford to run into minmax and the gap again. If he does before he has time to recover, he WILL be torn apart.