It turns out I was able to find a decent replacement wheel at the local Yellow Bike Project for $15. Although it would be great to get that back from the city, I'm not holding my breath! Not too bad though. I also have been meaning to replace the wire rim tires I have, so this will give me a good excuse. The sad thing is that this was relatively close to the convention center, and it gets even more foot traffic than normal in this area downtown. I wonder if any wheel chairs have gotten stuck there as well. Anyway, I know about that spot now (and to look for others) so I count it a cheap leason learned.