I think getting him out to roam around is fine. I let one of my males roam around my room, and I find that just a little of this leaves him more settled and less restless. Just be careful of hazards on the room. I don't think you can overdo the exercise with a tortoise. I Imagine they know when...
I don't know if I would use the word "insecure", in a pathological sense. I think your tort has some healthy survival instincts, which are normal. I have several Hermann's, from juvenile to adult, and they all exhibit this same behavior a good part of the time. They like wandering around as...
The tendency to hide in a corner is no different from hiding in a hole, cave, box, etc. and is common to animals other than torts. It's for security, and it's not an indication that you're doing something "wrong", or that there's something wrong with your pet. It's probably an extinctive...