Fast Learner
First Post
If you go to YouTube and watch it (click on the face of the embedded video here when it's playing) and choose the higher resolution option, it's clearly a regular screwdriver.Also, I'm not convinced that IS a sonic screwdriver he's holding. Looks like a regular screwdriver to me. Hard to see there, but when we originally saw it on the TV properly, that's what it looked like to me.
More, it's clearly not a Cyberman. Rather, it's a Cyberman mask on someone in a black sheet or blanket or something. Definitely an impostor Doctor.