Both the links in that diff are very much dead. I can't fix them in the management console either ... it says it can't find them (either with or without the ":80").
The links are found in the DB, but they have been whitelisted. Is it just the links, or the entire domain that is dead. If just the links, I would suggest simply marking them as dead on wiki.
It's just the links; I've marked them as dead explicitly.
Thanks for asking about accessibility; there are no accessibility problems on my end at the moment, but I'll let you know if I find any.