fox,,,,,,,
I wouldnt worry too much about your T needing to DX you with actual DID to get disability. He will be able to put lots of psychological things down that will meet the criteria. Even if his supervisors don't believe in it, they gotta believe that something is quite wrong.
Sounds like your T cares a lot considering the amount of time he spent.

As for being concerned about who is the host........ try and relax. The host is the host until the aren't if you know what I mean. Just get some rest hun.

All of your parts still have a purpose.