Tear in my seat cover. What can I do?

@cruiser, it is hard to tell from the picture, but maybe it can be fixed to look OK and last a while. Maybe not, but why not try. I have followed a lot of your posts and have gotten the impression that you can do quite a bit. Taking the upholstery material off the seat bottom is actually quite easy. Try it, and then try hand stitching the seam yourself. Worst case scenario is that it won't work out, and you will lose a few hours of your time.
Worst case is, he'll have to take it into the shop, but I agree, gettin the cover off is not too bad.