Peter does raise a good caution and you should be the one to determine if Dan has really flipped out. But as Kalni, and even Woog, have pointed out over the last couple years - this is Dan the broken man. I lean to the side that he has a pathological nature to con or play games with you. It may not be that he does this on purpose but more out of habit of his own selfishness.
It sounds like your counselor can help you learn how to best coparent with a jerk.
I am so sorry that you are having to deal with this now, but I am optimistic that things will settle down for you shortly.
