HELP- site stopped loading- just hangs up

I just moved my WP files to a different directory- they were in a /dev/ folder now I want them up one level.

Actually, the move went WELL!!!!
After I moved the files the site worked fine, except, as the instructions said I had to reinstall the pictures.

I first went into a page through the Pages admin panel and deleted a picture and went back into the Insert Image button and added the graphic. So far so good.

Then I got smart! ARGHHH!
Why not just open the HTML window in the Pages admin panel and fix the path?!
When I tried to upload those changes I lost the site.

I can’t get in at all. The “loading” indicator just keeps spinning.

What do I do??????
http://scifri.org/dte/

TIA
Carl