That will teach me not to look at my computer over a holiday...
TV is right, cutting the control cable will void the warranty. On the plus side, the control does not need to be located anywhere near a television for the unit to work. Once you turn the system on you wont need the control box again until you are ready to travel.
Are there any cabinets that are easier to get to that you could use?
Also, the change in the control unit that DoubleTree seems to be referring to is cosmetic. We are changing the housing for the unit. Basically, we are going to use a different process to form the 'box' that surrounds the electronics, this will not change the function or wires but it will make the unit a bit heavier. 3-4lbs instead of 1-2lbs.