How to cure backing up?

["guest@endurance.net" <guest@endurance.net>]

Teresa Mc Huh Sierramex@hotmail.com
I recently purchased a five yr old Arab gelding with a view to competing him in endurance at a future date.
The problem is this horse had never had any training prior to me and it was a rude awakening for him to be expected to obey commands.  I have worked with many green horses but this one resists by backing up no matter what the terrain or risk to life and limb.
He is a big agressive gelding and when faced with an undesirable situation will simply start to back.  I try circling him but have a hard time getting forward motion when he is in back up mode.
Does anyone have good advice before he backs us both over a cliff one day?


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