Thanks to all for the concern/couch offers. I know that my roommate and I do have a legal leg to stand on, but we've decided to vacate for several other reasons not really related to the landlord. I'm not going to go into all of them, but one big one for her is that she can go home for the summer, live rent-free, and make a ton of cash.
Looked at my first sublet last night - I had totally forgotten about the Holy Triangle of aparment searches - price, location, apartment quality. This place was really nice, and really big, but the neighborhood was shitty and the price was out of wack with the first two. So the search goes on. I do have a place to look at on Saturday that sounds pretty cool; I'll keep you posted.