I know I'm not one to talk (still sorry about how difficult I am, people who've helped me before) but I would say that you should try to post pictures of the entire cage (after changes) including one that shows you got rid of the glass. If you do that they might have a better idea of what's going on (yes, I do see the irony, to those who've met me before).
It might also be your tort's personality, or he is begging for something. My tort climbs his wall whenever he wants more food (he doesn't flip, but he does get close sometimes) and like someone has already said (sorry, I forgot your name) he could just be entertaining himself. My boy used to wedge himself in between his glass and log so he can get to the top of the log, and fall on his face. I think you might just need to put stuff in the corners (if you already did that, I'm sorry, I don't have the best memory)
It might also be your tort's personality, or he is begging for something. My tort climbs his wall whenever he wants more food (he doesn't flip, but he does get close sometimes) and like someone has already said (sorry, I forgot your name) he could just be entertaining himself. My boy used to wedge himself in between his glass and log so he can get to the top of the log, and fall on his face. I think you might just need to put stuff in the corners (if you already did that, I'm sorry, I don't have the best memory)