text: Unfortunately I don't know JOSM either, but heard that it had more lower level disconnect/reconnect capabilities than iD.  On the other hand I think I understand the turn restriction relations enough to clean up most KeepRight errors, but still at the mercy of what iD can't do, and more frequent than not it's the overlapping ways that kills me.  I guess in iD I'd have to delete all the relations before I can work on the overlaps, just that it'd be a pain to put the relations back in. 
  
  And another facepalm: Take a look at (40.07578,-76.29747), I think it may also deserve its own red X, someone drew ways on top of existing ways and they don't even line up...