A BLM can pul hate pretty easily at lower levels. He can also pull pretty easily at higher levels if he gets multiple procs straight off. Also I'm sure it can be infuriating for tanks in synced dungeons when your BLM knows he can burst down any aggro he gets in a couple of seconds, often before the aggroed mob has had time to run over to him. I know I've been guilty of this in the past.
Sometimes though you have to feel for the BLM when he's in a dungeon with a fresh 50 tank. Even popping quelling strikes you often have to sit twiddling your thumbs while your tank gets enough hate back for you to risk another cast. Anantaboga used to be a bugger for that.