Hey Matt,
Hmmm... you're right, we should probably build an easy way to do this. In the meantime you can do a quick and dirty automatic updater reset by first getting the GUID of your AutomaticUpdater. (See the GUID property).
Let's say your GUID value is "YOUR-GUID". Deleting the following file with "clear" the current state of the AutomaticUpdater:
%appdata%\wyUpdate AU\YOUR-GUID.autoupdate
Note that his doesn't cleanup any downloaded or partially extracted updates. Doing that programatically is a bit more complicated. We're going to add an easier way to do this in the future. Thanks for bringing this problem to our attention.