He knows not to do it. It is like something just hits him and he pulls. Once he hits the line and realizes he can not get lose he quits. Like last night what ever happened to get him a hair up his rear was not coming out. So instead of putting him back in cross ties I tied him in his stall until I was done with bioscaning him. Boy he needed it too after pulling. When he use to get lose it only made it worse. I use a neck rope and that ended that for some time. Now for what ever reason he is doing it again. If need be I will put a neck rope on him again and time him to the post outside and let him work it out. It is just that fear that something is going to happen to him. He is now 20 and I have owned him since he was 5. He also does not like anyone behind him when I am loading him into the trailer either. Again someone beat him to get him into a trailer when he was younger and not he worries that might happen again. If I am left alone with him he will walk right in. The min. He even thinks there is someone back there he will not go in.
The big thing is to not let them get away with it. If he does it I let he do it until he relaxes. It has probable been 7-8 years since he has been this bad about being tied. Every other horse I have even my 30yo broodmare who has never been tied or worked with much until I got her about 9 years ago does not do it.
I start all my weanlings tying before they are even weaned from their dam. Non have had this problems even after many many years. I just think it is Te and if he had not had that fear from years ago he would not be like this. Once thing is despite all that happened to him in his younger years that is really his only vices and I can deal with them.