I have been blamed when DPS insist on not fighting the same mob and waking stuff up after I have slept everything in groups that have no BLM while I am the WHM. I let them do it the first fight then tell them I will not heal them if they go attacking a different mob other than the tank and out of tag order which I always do if I am the sleeper.

They don't like it some times but what can they do? Leave? Ok not an issue for me my wait times are near instant.