I just had one of these take off at about 90%. Yes, 90%. What that was all about is beyond me. Now that I'm done cussing, I'll warn everyone else! Tank pulled a sapper and a burrower. The burrower was grey so tank and ranger focused on it to get it out of the way. The tank had aggro on both mobs, and then out of nowhere, the sapper decided to go for a stroll. Of course, there's a 50/50 chance of the direction he goes and he goes in the direction of his living friends. Ranger couldn't get snare off quick enough before sapper turned the corner. I've never seen this happen before and hopefully I won't again. Now I get to do a nice little CR from Firiona Vie....again.