So from then on , i grabbed HIS wrist as tight as i could.
This is where you lost control. You played his game, his way. Did you try and ask the guy to go easy initially or did this situation grow worse in silent frustration?
I agree with Matthew, that this training partner has much to teach you about yourself. The partners that really cheese you off, are the ones that will challenge all the aikido ideals.
For a more practical answer, can you approach the guy and ask that he just ease off a little so you can enjoy your training a little more? Perhaps stay clear of the guy until you think you are in the right mindset to tackle the challenges he presents.