Broken installation of WordPress 3.0

Okay, I know it’s my fault. I goofed, but I’m wondering if there’s any way to salvage the situation.

I had a test blog running just fine at https://domain.net/blog/ with the actual front page being https://domain.net/

I wanted to experiment if I could run multi-sites from that location.

Among other things, I created a sub-domain of https://blog.domain.net/ and I forgot all the switches I threw …
such as
~ adding the required lines to config.php for a multi-site blog (still current)
~ adding the required files in wp-content/plugins/mu-plugins/

I don’t think the MU stuff is causing the problem.

But the last thing I did was to tell wordpress that the actual blog would now be at https://blog.domain.net

When I tried to log in, I got a recursive internal error like this:
https://blog.domain.net/blog/blog/blog/blog/blog/blog/blog/… etc

I tried deleting the sub-domain, but that just generated a different error.

The .htaccess file doesn’t seem to have been modified since the blog was working.

Where is the info stored that causes this kind of error, and how do I fix it?

(It’s not that important for the test blog, but I can foresee making a similar mistake on a more important blog, and I’d like to have the informaition handy.)

I “repaired” the database, but everything was supposedly okay. The redirection must sit somewhere in the database. How do I get at it?