As to grooming, several ideas/hints -
1 - he looks really fine coated. AS a youngster up to maturity at 3-4 yrs of age, that type of coat knots up easy - with sand, dirt and sweat. Then, any kind of grooming is painful as the knots "pull" while being groomed. (Did they "pull" while clipping him?) Seems the horse that has this coat is also very sensitive to the pulling. Instead of a curry comb used in a circle, just short, "quick" strokes in a straight line. Same with a brush and yes, wash when/if you can. I really like the "scrubbies" - I've gotten them from the bath section of the Wal-Mart, Dollar General, Family Dollar (don't know what you have over there for in-expensive stores). Now I make a square from hay twine - crochet, knit or loom knitted. I will have to take pictures of mine... great use for ANY type of haystring! Or you can get the expensive ones meant for horses.
You can also make one from straw/hay - by twisting it into a "rope" then winding that rope into a flat mat that can be sewn into place or just twisted together and held in your hand... can't for the life of me remember what either the tool or the grooming technique is called - even though I grew up using it!! It used to be traditional in British barns and grooming. Older grooming books will still detail both the making of the "tool" and the application of it (besides like a curry comb - it is used to smack/hit the horse in light, short, swift strokes to encourage blood vessels to the top of the skin - bringing up warmth and oil, like a massage). This will also work to dry off a wet horse AND to help warm one that is wet/cold/hypothermic - stimulates blood cell work... There has been discussion of this in the past on this forum.
2 - tie him up short so that he can't turn his head to push at you.
3 - For the swinging of the hips into you while grooming, while you are working on training/manners. Drill a hole in a board on each end. Tie him near a corner of your fencing. Attach the board to the fence near his chest and haunches - somewhat pressing him into the corner. This makes an easy set of stocks - at his height. To groom his other side, you will need to take down the board, turn him around to the other side & re-attach the board. It will keep him off of you and prevent him from swinging out towards you, pinning you against the fence or kicking at you. IT IS A TOOL, not a training device! You remove it but haven't continued with his training, he'll be no different... Honestly a piece of pvc pipe or even just a rope, might work just as well.
Personally, I LOVE stocks and if you are going to be doing a lot with horses, you might want to consider purchasing a set or building a set. I've even seen the ones for mini horses that are built up off the ground (at a nice height for us humans working on them) w/ a ramp to get the horse up to/in the stocks and back down... Many different styles - just want safe and solid!
This is a full size horse, portable set. The short "top gate" was opened to allow a vet to palpate, ultra-sound and artificially inseminate mares OR to check for blockages causing colic and do fecal exams on unhandled horses. The reflectors are do to the fact that the vet hauled this set to many farms behind her SUV.
This is a wooden set that I built. For shorter ponies (Star is 13.1 hh), I moved that "chest bar" down under the side board to hook it up. We put a ramp behind this set up to allow our shetland stallions to live cover (breed) larger ponies and full size horses. Our 16 hh National Show Horse mare fit in this set of stocks, too!
and here is a post done here on LB in 2009 that includes pics of different ideas for stocks
http://www.miniaturehorsetalk.com/index.php?/topic/106450-photos-of-trimminggrooming-standsstocks/