Sounds like the calliper is binding/jamming especially if it is rubbing.
Have a shop disassemble the calliper and clean the piston, maybe replace the seal
then re-bleed the brake.
There is an issue that can happen when a bike is dropped where fluid gets behind the piston
in the master cylinder, or it can happen where the reservoir is overfilled. This causes pressure to build up
and eventually the wheel to lock. But as you say the wheel is spinning freely other than a slight rub. I would not suspect this.