It appears that our only option is to keep resubmitting the same file
until it validates successfully. If that truly does work, then it's
obvious that the problem is in the OLC validator software. Once I have
a track record of proof, I'll contact the OLC folks again and try to
get them to look into it. Although at this point, they don't seem to
have any enthusiasm at all for dealing with this problem. We'll see
how it goes.