No they haven't, except for fridays. I went into the club shop yesterday to ask if there was any chance of me getting my daughters shirt signed, she said to come back at about 11 on a thursday and all the players would sign it. But while I was there some "older" guys were stood near the away turnstiles and they usually went up to watch on a regular basis, but they said that you could only watch from outside the grounds. You can still watch them train but just not as near as before. As I stood insde the back of the away end, I could see all the players on the top training pitch.
I guess it would be very difficult to stop anoyne watching the training sessions altogether. You can get a good view of training from the First floor balcony at the Metrodome but obviously no good for getting a shirt signed. The whole team were in the Metrodome Pool a couple of Wednesdays ago - didn't see them doing much swimming though! They looked as if they'd spent a lot of time in the gym.
Good point, I never wanted to watch the training itself but had to wait until they had all finished for the signatures. Waited from 10.30 until 1.15, I was frozen....lol