I dont know guys. I am sort of in the middle on this one as I selftaught myself 5 years ago without crashing my first trainer, and after I was very comfy with my trainer, built a kit built .40 size ultimate and maiden that with no problem. I was crapping my pants as it was a lot more touchy and a lot quicker, but no crash, just some new underwear.
I know this wasn't a good route, not ideal, but it can be done. I dinged up that poor ultimate a few months later and rebuilt it a few times, learning many many new things, however, she is still in one piece, but I have stolen the gear out of it for something else.
I am not so sure about the trainer story falling apart though as I have abused mine beyond anything. walls, torque rolls, blenders, etc., nothing has gone wrong. I dont know if the TH Trainer has a two piece wing like my Hobbico Superstar, but it sounds to me they just pulled apart, rather than folded. I just epoxied my wings together, and went and had a ball.
I do agree with the advice to move up slowly. A super sportster would probably have been a better choice for me at the time, but hey, i was young. :P I don't know why everyone thinks trainers are boring. Once you are very comfortable with it, you can fly it anytime, any weather. Try to make it go backwards in high winds, it is just so easy, you don't mind flying it and there won't be much if any pucker factor at all.
Keep the trainer, get a stable second low wing airplane, and then get yourself a nice aerobat.