Wow! Sounds like a bad "school" dream; maybe you should try showing up naked?
That's neat you figured out it's because T is away; anyway you can use that and get yourself feeling ready all by yourself? T (and you) would be so proud!
The first week my T was away on a multi-month vacation, I was home that day and got all antsy when I should be leaving for therapy, my body wanted to go out and get in the car and I had a heck of a time checking it! When I figured that out, I just sat and cried, but then I started looking for and logging/writing about things like that and it helped some.
I hope when school starts in a week things are in pretty good order (rather than so confused with the movings around and reassignments, etc.) and you feel "protected" and helped until T gets back.
But T's really there, "behind" you.