How to Get a Title to an Abandoned Vehicle - wikiHow
I believe what the storage owner should have done was a lien sale, and I assume he did not file the appropriate paperwork, as Matt seems to have checked into it.
Matt, if you wanted to get into racing, seems like this would be a good opportunity. If you found a frame with title, that's a lot of work to swap everything over. But depending on how much you paid for the bike it might be worth your while, even if just to turn around and sell it.