Yikes. Unfortunately the service I'm referencing isn't mine, so that won't work for me, but I really appreciate the quick followup.
Hopefully the service I'm referencing will become accessible again so I can remove it -- but definitely a pretty major bug/issue.
EDIT: I was eventually able to get in once the service was restored. Not sure what I could've done if they had deleted the service or made it private, though. Makes me hesitant to reference any data not managed by my organization.
-Aaron