Well, Frankie is doing better. Still skittish, but I can pet him while he eats and he purrs and purrs. Loves to be scratched under the chin. He's still basically hiding in a carrier or the play gym I have upstairs, but seems much more at ease basically. He is such a sweet boy... it may take a long time for him to relax, but he'll be ok I think. I haven't gotten peed or pooped on in about 4 or 5 days, so that's a great improvement!