Hey, I'm not sure in which way this might be useful, but currently if you die and ress at the spirit healer, all damage you deal is reduced by 75%, including the burning rush damage inflicted to yourself. You'll only be doing like 100 damage per tick to yourself, and the out of combat or sacrifice generation will heal quicker than you take damage, giving you a full 10 minutes of Burning Rush run speed, without your HP going below 98%. Do with it what you want,m could be nice if you're exploring or running in zones where you shouldn't be in :P. It's just +50% run speed for 10 minutes.
No this is not intended, and is a bug with the pre-patch.