I wonder if this bug is similar to one my resto druid encountered. I had a macro for NS/HT and got jumped by a rogue in LM. I pounded the macro like mad and suddenly found myself full health. Some guys killed the rogue and suddenly I found myself with endless NS. Instant HT over and over, instant Wraths over and over. Went for about 5 minutes, then a priest dispelled it off me. I was pissed lol.