I'm going to agree with saranda on this one sorry, rearing scares the bejeebus outta me.
Reason being, a friend of mine lost her life january this year from a horse that reared one too many times one afternoon, the mare went up and over, and crushed my friend between her and the ground.
She battled for 10 hours, in a coma, she had a fractured skull, bleeding on the brain and internal injuries. She passed away when her heart and brain couldn't cope anymore, before they even got her stabilized enough to airlift her to Wellington hospital.
Her career as a problem racehorse trainer, her saddle and helmet, her back protector and everything, couldn't save her life.
Please rethink anything you do with this horse, saying that you can't part with him because you are "soooo close" is what will end up getting you hurt if you are not careful. I do understand being close with a horse, I really do, but please don't risk your life for that. You yourself have already admitted he gets dangerous.
R.I.P ~ Bubbles - 25yo tb mare - 13.04.2011 ~ 8:30am ~ passed away naturally and peacefully in my arms