I doubt it's ice, unless you have a glacier formed down there.
to remove a motor on a choicevend, you must unload the racks, remove the rack by lifting it up & tilting it out of the chassis,( is heavey, be carefull) tip the top of the rack towards you & lift it up enough for the back-spacers to clear the bottom/auger section, once the rack is out, you can remove the bottom section with the motors by sliding it forward, this will give you access to the motors which are mounted at the rear of the bottom section, pay attention how you pull out the motor, ( & you have the other motors to use as an example when you put it back in.)
or instead of completly pulling the motor, you can remove only the first drive gear by removing it's "C" clip from its axle, & see if the motor will operate without popping the Circut-breaker.
sometimes on some earlier CV machines you could slide the bottom motor-rack forward enough to service it without completely removing it from the machine. there should be a support rack built into the machines bottom chassis area to support it when it's in the service postion NOTE: BE CAREFULL ..
when you slide the bottom motor-rack forward you will shift the center of gravity of the machine forward too! making the machine "tippy" towards the front, you dont want to wear it for a holiday sweater now do you?