Phone: HTC Tilt w/WM6

I was on the "My Prefs" page and playing with all the knobs and levers and now I seem to have backed myself into a corner. I experimented with switching to "WML" instead of "XHTML" and now I can't switch back. When I try to access the "WAP Options" page from the "My Prefs" page, I get the following error: "This page contains errors and cannot be displayed". Everything else works, including using the forums -- It's just that I'm now relegated to the antiquated WML format and can't seem to find a way to get back to the XHTML format since the page refuses to load. I'm stuck.

Any ideas?