Hi, csomerville!
My name is Polina, and I am a mapper in the OSM team at Lyft. I removed the ‘oneway’ tag because due to the current geometry the existing ‘oneway’ tag blocked some maneuvers at this intersection, which are allowed based on the road markings. I left the road geometry unchanged, since it was added recently by another mapper, and in our practice, we try not to change geometry without apparent reasons for that. 

However, I agree with you that it would be preferable in this instance to map this intersection without taking into account the physical barrier as bidirectional with the traffic_calming=island tag (example https://www.openstreetmap.org/node/10628563875/history). But according to the OSMwiki this tag should be used between two lanes of a carriageway. 

Best regards, Polina.
