if they hadnt had held the camera on the 10th Doctor for so long, you could just say, it cut before change started to happen, but the camera was on him long enough, for me to expect to see some change.this is why I tend to think the 10th Doctor is safe, if they hadnt had filmed that, then yeah all bets are off, but that filming makes me think we have not seen the last of the 10th DoctorHOWEVER - going as far as to fake filming for the Xmas special to cover it up? Now THAT is ambitious, could it be this regeneration gets reset buttoned, or will thanks to his hand the Doctor regenerate into Tennant again, or even have the process interrupted?
what is odd about the regeneration, is we only saw the regenerative engery, nothing about him seemed to be changing.
This is the fear i mentioned, how are they going to resolve this.
and as said, weve seen the xmas special so 10 is still our current doctor.
also the hand seems safe in its container, I don't see how it can influence the regeneration in there, if theDoctor had been holding it at the time of his regeneration that would be another matter.