Hello, My horse has a very tight back due to a badly fitted saddle by his previous owner and I was wondering if anyone knew how to sooth it by just grooming him or rubbing him etc... no chemicals or medicines, treatment or feed supplements... any advice would be much appreciated

A bad fitting saddle is the cause of a number of behavour issues. My horse ended up throwing me because of just that.

In my case the horse had very sore withers and did not like being touched. It was time that did the repair at first untill she would allow me to touch her and then I used light massage to get her used to being touched. She relaxed, in the end and so did her back. A new saddle was also brought but not until she had been measured for the correct fit.

If your horse is not showing any improvement you may consider getting the vet in just to be on the safe side and rule out any deep seated injury.

It took three months before she was ready for the new saddle

Good luck.

Probably a combination of massage, Bute, time and re-conditioning is the best way to trreat it. Even after your horse has had time to recover, they may still mis-behave on the expectation of pain rather than pain itself.

also, it could be more skeltel than muscular. a chiro might be necessary

I agree, massage or chiro. I personally have never used massage for my horses but have chiro visits once a year for them. I do hear that massage might be even more beneficial for just routine care due of course to the large muscle masses on their body. I think I am going to give it a try.