OK...call me stupid for not figuring this out myself.
I hated using the special tool to remove the standard sensors with the anti-theft cover. I converted to flow-through sensors to get around that. I have some issues with those flow-through sensors and was about to scrap the whole system in favor of Tire Minder. I really didn't want to do that because I have had such good performance with TST. I am not worried about my sensors being stolen because if someone wants them, they will either get them or damage valve stems trying.
So...it is really pretty simple. Maybe I would have figured it out had my original sensors that I swapped out for flow-throughs had gotten to the point of a battery change.
Step 1. Remove the 3 screws holding the spinning cap over the actual sensor and separate the parts of the security cover.
OPPPSSS...there isn't a Step 2.
Its that easy to convert the button sensors to a spin on and off set up without a tool.
Changing the battery is just as simple. You can use the stupid tool to hold the base while you spin off the cap or perhaps a pair of pliers.