This might sound a little crazy (hence I'm posting it in the darkside of the moon forum), but... why don't scientists breed out the stinger from the AHB? Seems like that would be a great solution to the problem... since the AHB are "super" bees that aren't very susceptible to the problems the rest of the bees are facing. Of course, then they wouldn't have any real defense against hornets and wasps and such. and, every time you went to check the hive, you'd get covered by the little guys trying in vain to sting you.
Still, it might be worth trying.