I got stuck on the Bootloader screen today as I was updating a few things on my XV6800. Fortunately, I still had an active USB connection and I was able to install the DCD 4.1.2 custom ROM on my device. This is a really nice ROM mainly because you can use your finger to pan/scroll more pages up and down, including on Pocket Internet Explorer. However, since I have Skyfire, this isn't a huge benefit.
Unfortunately, I'll have to go through this again in a few days because my device has a defective keyboard. I hate reinstalling all my applications.