Yes, Another SoF topic (but constructive!)

[Wournsfeik_Untawhasyn]

-Make the tortoise interruptable by a normal Stun as well

Not that I'm saying your suggestions are not valid, I'm just jumping in to note that you can and I routinely stun that tortoise with Shield Bash. So it may have built up Stun Immunity by the time you go to stop it.