There are two different topics being discussed in this thread and its confusing the people.
First is about agro control, methods to keep a mob in interlock fighting with you instead of rolling out and attacking others. For that you can use skills like taunt and compell close combat, as well as trying to balance out the damage that you deal against the other competitive factors that mobs build up agro against (healing for example).
Second is a bug that surfaced recently, in which: The 1337 H4x0r mobs interlock you, hit once, go out of interlock, interlock you again, hit once, go out of interlock, interlock you again, hit once... all the while your character doesn't even get one turn to make one move, until you find a way to break their loop by spamming your interlock hotkey or spamming some abilities etc. Ther are many threads about this bug.