Thanks! I got him because I trained my mini and rehabbed her and I wanted my first BIG project lol. THANKS SO MUCH FOR THE ADVICE!!!!! I will absorb it all and will check his feedHey, I couldn't resist putting my 2 cents worth in here since my favourite thing in the world is to re train ex racehorses.
Your boy sounds to me like a perfectly normal horse off the track, they have two paces: Flat out and Stop. So when you ask them for other paces e.g. walk, trot, canter, they don't understand and become frustrated (evident as pawing the ground, tossing the head, swishing the tail).
First thing I would do with a horse off the track is turn them out to pasture for 6 months to allow them time to work all the high energy food and other additives out of their system. Allow them some time to recover from the high stress environment of racing (racing industry is very hard on horses and you need to be very aware of that).
When you bring them back in, please please please use a snaffle to begin with. If you start with something more harsh you will never bring them back from it and I assure you, you will not get them working nicely for you, they will simply work IN SPITE of you, there's a difference!
Make sure their food is composed of mostly fibre, watch how much protein you feed them as they are sensitive to high energy diets and will 'fizz up' overnight! This make take some time to figure out what works as each horse is different. Feel free to add multi vitamins such as magnesium, selenium, zinc, vitamin E to make up for lack of grains but make sure they are proportional.
Last piece of advice: Be patient! All his behaviours are very typical of an ex racehorse so don't be too concerned. However if you want a horse that you can ride without too much fuss, don't get a horse off the track. EVER. It could take another 6 months before he really adjusts to his new lifestyle and is happy to wait for you while you are talking to someone during your ride.
If all this sounds like a lot of work and time, it is. I only do it cos I love it! Once they are working nicely and well trained, I'm pretty much looking for the next newbie I can start with. Make sure you choose a horse carefully to suit your needs.