seems to be rooted
during the fight, the flock members add. first 1 at a time, then at a time, not sure if % or time based but by the time that he died, all of the surrounding flock members were aggro.
2-boxing shm/pal with healer/wiz mercs, just concentrated on the disciple and slowed the members ... the flock members are dark blue cons (disciple yellow) to 100