when I saw the title of this thread I figured it was someone in Massachusetts- does anywhere else have these stupid rotaries the way we do?
Unless I was really far from home and had a chain tool (which I do carry) I wouldn't risk my life in one of those rotaries trying to retrieve it. If the chain is that worn it's time to replace it anyway. I had one break a few months back on the way into Boston. After quite a bit of wrangling with it and realizing the ancient chain tool I'd been carrying in my commuting tool kit was more than inadequate finally gave up and had to walk home and get my folding bike. I was dirty and ticked off by the time I got home.
I understand your desire to ride the exisiting drive train through one more Boston winter- it just seems a waste to get a whole new drivetrain all gunked up with salt and snow. But you'll feel great once you do a little bike overhaul. When bikes get to the point of rattling and rolling and falling to pieces under you it's time to spend a couple of bucks and some time tinkering with them rather than riding them. You've obviously gotten the most out of the old chain might as well invest in a new one.
You have nothing to lose but the chain that binds you- Karl Marx
You deserve to rant. We feel your pain.