I like your question. I do think it depends on who is asking and if you feel like sharing your TMS approach with that person. In any case I don't feel it works to say that it feels fine when it isn't, but I also feel it is wise not to let your back become the focus point of the conversation. Here are some possible answers:
'It should be fine, only the back of my mind still has difficulty accepting that.' This will raise question marks, so be prepared to explain your answer further and take the risk of getting the 'you're nuts' stare.
'Thanks for asking, it's not fine but I decided to stop evaluating.' If you want to avoid further questions, just redirect the conversation with a simple 'but anyway, how are you?'.
would love to see other answers....