United emergency landing at Newark - Sanded off half of the wheel hubs.

How do you keep heading down the centerline with that much drag on one side as your airspeed declines and your rudder loses effect ? Why don't you ground loop around the left main ?

I'm not a pilot, but wouldn't that sort of problem have shown up as bells and lights in the cockpit or just the plane handling funny?

This looks like the gear was filed down a heavy grit of sand paper or an emerey wheel. Clearly a brake siezed up and you have this mess.