Healing in clering stance can be due to a m istake OR emergency heal because the tank silly he is forgot to move out of an easy aoe so even in cleric stance the heal is maybe low but avoids the silly tank to die, might want to think of these two circumstances.

For the Knock back as a healer I use it if I am attacked the silly tank does not care to remove it from my shoulders so..fluid aura and sleep....eh? might want to consider this too.
Other situation where I use fluid aura though rare is when dps take so long to kill a single target that ...using fluid aura will shorten that by alot since used well it will kill the target.

For the use of single target BLM ability is used when the silly tank again is not able to hold over a multil target aoe skill...eh?

ever thought of those ?