Not fair and surely not professional- did you have to pay for the sessions?
Happened to me too- I work in the medical field and am use to help ppl so when my T was ill (had to cancel few session) I asked him what's wrong and he refused to tell me. I argued that I could help him and he said that that's the reason he won't share this with me. I was a bit angry at him then. He explained to me that in therapy T shouldn't get any help/service from his client. That T-client RS is hard enough without any additional second/third/forth... meanings.
So sorry your T have crossed this boundary. I know it's hard to ask for what is rightfully yours (feeling guilty that he needs your help now, is sick and scarred). You are paying him for his service, he is NOT your friend and should have known better than to use you for his needs.