Thanks for the comments :)
Yeah the link got messed up.
Anyway, I think the tossing is just him being a brat. I checked all where the bridle goes on his head, and there are no signs of any discomfort. And luvs, he recently had his teeth done. He is young and sound, and full of himself. Gidji, I understand your point. No offense taken, but long before I made the decision to use a hackamore, I studied up on it and heard plenty of horror stories on horses having their nose bones broken, so I always keep in mind that pressure on his face. But you have a good point to bring it up. I think it might clear things up to hear his story.
(I apologize for the length)
Got him as a weanling. He was to be nothing more than a field companion for my beloved welsh pony. At my age I was, to put, naive, I thought he was the best thing in the world(the pony). I now look back and wonder how I didn't get killed. But anyway. Slim. He was supposed to be no good, just an ugly little mountain horse. (The same person I got him from asks me today to buy him each time she sees him) When he was ready to be trained, we sent him to a Tennessee Walking horse guy. Long story short, he almost ruined him, if it wern't for the fact that he is so good natured. He came back to us with huge sores on the corners of his mouth, and every time you put his bridle on, he just got worked up into a huge lather. Well we got him out of that, and he hardly listens to the bit. He was just so.. tense. I rode him a couple of times with a halter, and someone suggested a hackamore. I tried it, and it worked better.
And now, on a whim, I bought this bridle. It looks brand new. And I figured if it doesnt work out for him, I can use it on another horse for $35.