You only need to stay away from the MT to avoid splash damage and the first attack in the last phase boss rotation (I forget what its called). You shouldnt be getting orbs as monk. You should shoulder tackle to the adds, it shoudnt lower your dps. You may loose your stacks comming out the tubes, but its possible to keep them if you time your attacks right. The between leg phases sometimes you cant help but loose your stacks.

Ultimatly your issue with the tank has nothing to do with parsers, they were simply a bad player, good players who use parsers will understand why someone might have lower/higer dps based on mechanics.