You hit it on the head Jen... PTSD is not spur of the moment, as every little thing takes mental preparation. It used to take kerrie to tell me the day before, if not longer, that we where going to go and get icecream at the strand, or do something, and as my own healing has progressed, I can move on the spur of the moment for her now, though sometimes still not quite, as it depends on where the location is and time of day. If kerrie says she wants to go to the shops in the morning, then that is what I am prepared for. If she then stuffs around so that baby needs to sleep first, which means shops late afternoon, that means peak hour traffic, school comes out and kids are going to fill shopping centers, which means I am not going if it is going to be longer than in and out of a shop, then home, before all that crap starts and I have to be subjected too it.
Warning is the best and most appropriate thing for us Jen, that way we know that there are no surprises for us, thus our mood is already stable and prepared. He should get better the more he gets out and doing things, as to lessen the notification for most things, and get into the more spur of the moment ability again. I know it sounds so small, but it can be such a big think for a PTSD sufferer because of the mental preparation and self talk required to commit.