I bugged this in game, but I'm posting it here as well.

This below maneuver dispels 430 100% of the time for me - never any other spell. This is over a solid month of hunting there. Is this working as intended? Or is it supposed to sometimes dispel other spells instead?

A huge lava elemental hurls a glob of lava at you!
You make a poor effort to avoid the lava! [d100:37]
The glob of lava is deflected at the last moment.
The tingling sensation and sense of security leaves you.

Lava globs attempt to hit you, if they hit they will remove 430 or 140 instead of damaging you, if you do not have 430 or 140 they will damage you.

Keith/Brinret/Shiun

Brinret says, "Bring it on."
A bolt of lightning streaks down from the sky and strikes Brinret!
... 16428101 points of damage!
Powerful blast reduces Brinret to a smoldering pile of ash!