At this point I expect lemon to have in his contract "All fees from the court for filing will have to be paid by you", and they're waiting on MoRon to pay up that 10$.You're crazy. It's just a random fee. Small crap like this gets missed all the time, and the courts seem to file "Ok you did the thing" notices a few days late anyway. If they wanted to throw the case without getting sued for incompetence, there are better ways than a blatantly obvious "refusal" to pay $10.
Having said that, sometimes stupid people really are that stupid, and I will laugh for days if they ignore this to the point where it screws up their appeals.