Wow, is it me? You didn't lose control, you got some back. She told you to chose her or the diapers. You chose the diapers. You called her bluff. Now she wants to talk. I agree with everybody here, it IS a shock for them to see us in diapers. But, they DO get over it and (usually) accept it. Freaking out over it is the exception, not the rule, I have found. The other thing, this "chose it or me" thing gets used a lot, even if you didn't wear diapers. It would be something .... motorcycle, golf, whatever it is that you want to take up. It's a game that never ends . If she feels she can't live without you, she will accept it. If she can live without you, you're toast. Up to you.
BTW, PP brought up an excellent point ..... the maintenance man. It happens.