Just got a new one! Same setup as the others.

I counter a snap kick with my side check and follow with the power cross.

BOOM goodbye arm.

VERY IMPORTANT NOTE: His snapkick actually fractured my chest which means all the power is generated from the arms and the base leg!!!

So when attempting the power cross try relaxing the chest and aiming with the non-punching pec.

Remember the set up for the punching arm must be:
extend-pec
lower-shoulder
contract-elbow
contract-pec

and then let it loose!