Yeah, they fixed the anti-Sticky thing with the Anniversary title update. Also, if you use Armor Lock against a boosting Wraith, you can get that thing in flames.
I don't use Armor Lock because I suck at timing it, and most people do. Some people though, know how to use it properly and go in and out of it at the perfect time-- not when their health is at a tiny fraction and they're bound to be killed immediately when coming out, or in the middle of an open area. Those people that know how to use it make it very frustrating, because you're bound to be finished off by a teammate of theirs in the hangtime, or they've got a power weapon on hand and are going to use it the second they exit the Lock.