Jarek 🚲
I am unable to revert using JOSM as I get an unhandled exception attempting to resolve relation conflicts when reverting 104851496 (the fifth changeset in the series).

We will need more advanced tooling for this vandalism to be undone.

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (19) of main
org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Deleted member referenced: {Relation id=6621219 version=32 VT [way 176087115, way 35529041, .... many
at org.openstreetmap.josm.data.osm.Relation.checkMembers(Relation.java:476)
	at org.openstreetmap.josm.data.osm.Relation.fireMembersChanged(Relation.java:488)
	at org.openstreetmap.josm.data.osm.Relation.setMembers(Relation.java:60)
	at org.openstreetmap.josm.command.conflict.RelationMemberConflictResolverCommand.executeCommand(RelationMemberConflictResolverCommand.java:61)
	at org.openstreetmap.josm.command.SequenceCommand.executeCommand(SequenceCommand.java:79)
... stack trace continues