Fangor, can I suggest having Wren fly close enough to Control Freak so that he won't get any bonuses from being prone (as prone bonuses depend on angle) and then using that Autofire Blast on him. Though the other characters might be more dangerous in a direct fight, they were protecting Control Freak for a reason; he's the most important one to their plan and he's currently staggered and stunned, so vulnerable and close to KOd.
Alternately, you could fly up and hit Control Freak with your Strike power; then you'd get the +4 bonus from him being prone and with him stunned as well you'd essentially guarantee a hit, but you wouldn't get the bonus autofire damage. Then if you want you can use Extra Effort to get a second attack.