I think I would call your Special Education district contact and inquire whether the SD has a policy about communication between school and home that in fact supports the teacher's position. It may be one of those things where the teacher is taking advantage of a policy that's in place but rarely enforced. If not then you could consider taking it to the social skills teacher's supervisor.
I would also be documenting all these little revenges as much as possible. A little note in the communication log on that day saying "teacher no longer allows aide to complete communication form" or something less blatantly antagonistic for example. Lets the teacher know you're watching, marks that day in the calendar for you, and gives you a point of reference should the quality or quantity of information coming home change significantly. I'd photocopy that page before you send the log back to school. Depending on the degree of animosity from the teacher, you might want to photocopy the whole darn log in case it gets "lost".
Hopefully you have an IEP meeting soon. If so, I'd write it into his IEP that aides are required to complete the communication log daily (or whatever) and the teacher should make additional comments as needed. If you use some kind of worksheet type of form for recording frustration level and # tics, you could make two columns for each one - the Teacher column and the Aide column.
THAT could be very interesting info don't you think?
Alternatively you could put it that you want to "relieve" the teacher of the "burden" of this daily "chore" since you know how very overworked the teacher is with all those children in her class. Therefore you would like to suggest that the Aide fill out the form with the teacher adding comments as necessary. Then write it into the IEP.
One additional thought that may stick in your craw. Perhaps a thank you note and basket of homemade brownies or some other small gift may help soothe this teacher's ruffled feathers. The note could praise her skills (hopefully she does have some redeeming virtues) and let her know that you wanted to reduce her burden by having the aide do the communication log. You know how very hard she works, yada yada yada.
I have done this once with a teacher that could not speak to me when I came in the door because she was so angry with me. Of course she was taking it out on my kids in subtle ways like sending them to sit and work outside by themselves as punishment for the most minor of infractions. It actually did work to some extent.