Fellspine crit calm resist pull

[DoucLangur]

this got me curious - is this something particular to an exploit with Fellspine, or is this GM attitude general to crit resist on calm being used for pulls? I did it on my cleric ALL the time. I mean... it is kind of the way the spell is designed? You calm a bunch of mobs, and if you get an early crit resist, you got incoming, but if you don't, you eventually have a bunch of calmed mobs ready for single pulls...