It could also be that while pushing the piston in, it got a little crooked and scored the piston. That will not allow the pressure to release, basically holding the brake pressure, resulting in the hot rotor.
Had it happen on a car a number of years ago. Smelled something funny, and when I stopped, the front left wheel was smoking fiercely. Luckily it didn't catch fire.
Had it happen on a car a number of years ago. Smelled something funny, and when I stopped, the front left wheel was smoking fiercely. Luckily it didn't catch fire.