You could go one step farther with Sancta's idea:
Have an aspect "Wizard on scene" pop up and use it to compel Rick to have his radio fail.
As for deciding who is going to get the compel in the first place,
wording of the compel could help you decide, for example:
Hey Rick, you know you've got your buddy the Wizard with you, and you know what that means for radio calls... radio hex... sometimes you just wanna punch him in the nose, he'd better pull his weight this time... *offer compel to Rick*
Well Jim, as things get frantic your Buddy rick is trying to call in some backup, and in just that moment you can't control your emotions very well... radio hex... boy is Rick gonna be pissed, you had better go and help him... *offer compel to Jim*
If your group is ok with it you could compel them both, with the condition that they could only buy it off if they both pay. then both would get an FP if the radio gets hexed.
Actually you might wanna give both of them an FP in any case, since they both suffer from the effects. That would probably help to smooth any ruffled feathers if one of them feels cheated *g*
Edit: now this post somehow feels redundant... :-P