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ehhhh i doubt that. If you remember way back when Total Biscuit was interviewing swtor guys and complained Stephen Reid was always in the background keeping an eye on them to make sure they didn't say the wrong thing. If the training was so extensive, he wouldn't have to be there.
Taken all interviews given by Bioware people... there is no doubt that each and everyone from these guys had trainings of some sort. I remember from very early on that they kept their "don't know about, can't talk about" very strong in any interview. A reporter can't really get yourselve into a corner if you block his questions with these kind of answers.