Illness/Sickness: Sick Black adult axy

Hi,I am new to this forum but desperately need help! 2 weeks ago I bought a junior axy and i put him in the tank with my black axy not realising that they eat each other.Anyway not long after junior was put in the black axy had him in his mouth right to the end of his tail.We managed to pull him out and the junior one lived!! (he is now in his own tank).The problem I have now is that the black axy now looks likes he is hunched over all the time every now and again he will striaghten out.He cant seem to put his back feet down flat they seem to be twisting in and look like he is standing on his top of his claw.Don't want to lose him as i have had him for 3 years and have had no problems until now.He is still eating regularly and his bowel moments are good.So i don't know what is wrong or know what to do.Can someone help me please?

I'm no expert, but it sounds to me like he got injured in the melee when you pulled Junior out of his mouth! If you swallowed some food, and then someone reached into your stomach and pulled it out, you'd probably be hunched over too! I hope he gets better!