Kingsley said:So are you back to believing it was Snape?
I have always thought maybe the ghost could have said a charm or incantation
Snaoe would have had to pretend he wasnt there when DD sent him on the mission at the end
I think the spirits are the only real option
Of course Snape could have done it but he wouldnt have been able to disapparate
Well all i know is that it was not snape because he says in the sixth book to Malfoy's wife that he didnt return to voldemort so that's all i have to say