Yes, but if I understand correctly, you actually had the wheels and thus the sensors off the car. The other poster I was responding to and I both will just have the vehicles parked with the wheels and sensors still on the vehicle, so there shouldn't be a "loss of communication". My guesstimation, anyway. I already have had my corolla parked at one point for 3-4 weeks and didn't have a problem, and my civic was parked for months without a problem.
I can't decide if I like or hate these sensors. They are a pain in the butt and add cost, but most people don't check their tire pressure like they should, so at least it cuts down on the number of people driving around with 14 psi in their tires, waiting for a blowout.
Good info though about what can happen if left disconnected too long though. I didn't know that.