In terms of taking or not taking drugs in advance, maybe, but he did prepare in a way that's much quicker. He was clearly flexing his hand and thumb at a funky angle that would make anyone's own gloves not come on. (I was amazed that the jury seemed not to have seen something so obvious.) Anyone can deliberately do this with a pair of his/her own gloves if they have a snug/tight fit, either on the first try or with no more than a couple of minutes of practice. All he would have had to do to prepare that trick is pause outside the courtroom door on the way in that morning to make sure he got the performance down right.