http://www.openstreetmap.org/user/lkrevert has reverted one of my changesets. I contacted this user, but doubt I’ll get a response, since this is obviously not the primary account. I don’t have the tools to undo this revert, and that’s probably not a good idea anyway without some sort of understanding by “lkrevert” not to revert. But it needs to be reinstated soon to prevent “decay”, where if someone else edits any of the ways in it, they won’t be able to be restored.
A revert of a revert is not easy and needs be done with a script.
You should ask in the Mailinglist because most experts are there.