Per the rules, is this tire still legal?
"-When the top of the wear-bar indicator is
flat across in two spots in a row on the tire (side-by-side
or in the same groove) or the tire corner/sidewall wears
into the two triangle indicators in a row between the tread
and Federal striped band around the sidewall or the tire
shows cords (belts) at any point on the tire, that tire will
be confiscated, destroyed or drilled by the technical
inspector."
The wear bar is still ok with the tire surface, it is just flat across with the tread that is left on the outside of the tire (this is a RR). All the wear bars on the inside of the tire are fine because of the cut, and all/most of the wear bars look like this on the outside of the RR tire.