If you turn up the heat, where else did @gavine expect the heat to come from. Clearly he wanted heat. It was chilly, and he cranked the temp up... what was the car supposed to do?
Just to clarify, my point was that it was chilly because of the air conditioner running to dehumidify. It wasn't chilly outside at all. My hope was that turning-up the temp a degree or two would lower the AC compressor output but not necessarily turn the heat element on. I understand that the car did was it's supposed to do and engaged heat because that's what it thought I wanted.
The other thing to note here is that it seems Tesla cranks the AC compressor up high when it's first turned-on, then it slowly ramps down. That could have been the problem I had. If I had just waited a bit, it probably would have settled-down anyway, making all of this moot.