[OSM-talk] Revert tools?

[MP]

I need to revert part of
http://www.openstreetmap.org/browse/changeset/3050941 - someone edited
live in Potlatch and screwed things up - he moved many nodes to some
silly position, then someone tried to fix it by restoring one of
affected ways... so I'd like to revert all node moves.

What is current status of the revert tools?

In JOSM I can select the affected nodes by searching "user:afonin
type:node", but I can't revert them to earlier version in history

Martin