He didn't really go into specifics on this, and didn't necessarily say he tested it with CC'd targets around and it broke them. They do have mechanics in place to make certain existing abilities not break CC, and pets usually disable their attack if their target becomes CC'd, so I'm sure they have the tech to make it happen if it doesn't already.
Being that there is already a raid encounter in place (pre-5.2) that heavily involves CC, it's not likely they'd keep it that way even if it did work that way now.
Hopefully they do change the low health thing though, and give it avoidance, and while they're at it do it for dire beast as well. You shouldn't have to worry about the health of minions/etc. that you have no way of controlling or healing personally.