Go and try to make the best impression on everyone else there. Be friendly open. Tell people you will miss working with them. Appreciate their good work. Try t

Go and try to make the best impression on everyone else there. Be friendly open. Tell people you will miss working with them. Appreciate their good work. Try to leave with a good impression. You are essentially leaving because the PM doesn't know what he want and can't judge actions of other people. In best case he will play the role of the grumpy/stressed PM. In worst case he will try to control each step you take that day. Both is fine for you. Try to understand it from his point of view. Most likely the team grew to fast and is now rushing into something they do not really understand, most likely are unsure about or have doubts on funding/survival/etc. His actions sound like he is simply scared. Sooner or later you will meet again and see everything from a different light. If they ask you about future "quick calls" etc instantly agree on a hourly rate you are comfortable with. With all that said and done. Leave with a smile on your face. From this point on you have nothing to loose and can only gain.