Bright, I like Bea's suggestion for a schedule for the condo. It's time to set up some sort of schedule for the use of the condo so that you both can use it w/o a conflict. He's not going to like it, but hey, that's his problem. You are still his wife and you should have some say as to when you would like to use it. If I recall, you don't go there very often and it would be wise to know when you can use it so that you don't have to ask him about the availability.
You need to speak to a lawyer about setting up a separation agreement so that things are spelled out. This doesn't necessarily mean a divorce, but it helps both of you to see who is responsible for what, etc.
It's all about them and they do not care how we are doing or what we need to survive. Maybe it's time to rethink how much of your time has been used in accommodating him and his needs. It's time to put your needs first...he's certainly not going to put you first any time soon.
I do hope he comes and signs the tax forms and doesn't linger. You need to find your balance and enjoy your day. I'm sorry he shot you down about the condo for next weekend. I do hope you get to go and can find a place to stay. You owe it to yourself to go and have some fun.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.