Wecome back!

I think zerk is fine. Two things can help though. I have built my zerk into a macro that asks for a leeches/esuna around 3 secs before pacification hits. Usually the timing is just right that I get cleansed as pacification hits. Other is increase in Skill Speed a slight bit. Lot's of talk out there on it, and an increase in skill speed would allow for that last part of the combo or and extra IB to come out. Personally I get in my combo's and IB before it hits, if the heals missed the cleanse then I use a Brutal Swing, as it's not affected by the pacification debuff.