Hi. I appreciate your feedback, but since the Blog was fine before the pingback, and now has the internal server error, and I have made no changes that would need an increase in RAM, I’m hoping to find a solution (such as disbaling plugins, though I can’t reach through a web interface) as to how I can re-access the site from the existing configuration. Thanks.
I had this response from the movable Type forum, which worked like a charm. Hope this helps someone else in the future!
In my experience, “trimming the fat” can help. Reset the activity log, delete unpublished comments/trackbacks/entries. Clean the Trackback and comment junk out, too.