Congrats on the 1 year annivarsary! Mind you I had my surgery 18 years ago but back then my Doctor told me it is very possible not to get out all the thymus. As for your remission it takes time. It took just over a year for me to go into a complete, drug free remission but when I did, it lasted 17 years

As for returning to work, let your boss know what is going on and try to take it as easy as possible, keep cool wraps for your neck handy and sit while teaching if possible. As for shots, I agree with your Doctor, don't get them. Good luck and keep us updated.