Really? If international accord is reached and that band is re-assigned for other purposes, and HAM operators protest by screwing with un-mannen aircraft and something bad happens, do you seriously think "I never agreed to stop using this frequency" will be accepted as an excuse?
I'm not a HAM operator, but I agree that it does seem like a really bad idea to re-assign a band frequently used for stuff like emergency communications. Still, if someone caused a plane to fall down just to make a point then I would assign the blame to that person and not the operator of the plane.
