Thanks everyone for the advice!
Like most have you have said, we have thought of x-rays, but like Cat pointed out, this horse isn't ours, and I don't personally want to put that big of an investment into this horse immediately. I know it sounds mean, but I'm being realistic.
I have my farrier coming out this weekend and will get his professional opinion on Stormy. We're going to at least try and get him trimmed, and then get him up on a float to a chiro. Obviously if he's going to be unsound and sore quite a lot, we're going to try and just find him a 'pet/paddock mate' home, if the landowners really want him off the property... so far they don't seem that fazed as long as he's not being a nuisance.
I'll let you all know what the farrier says :)
Thanks again for the advice!
♥ Seoul Searchin' for the Lovebug ♥