I think a good thorough physical examination which would include watching the horse move w-t-c, either under saddle, free or controllled lunging, eye exam, neuro exam etc. would be sufficient. X-rays...
I bought this bridle last summer. I think if your horse is a cob size, it runs on the small size. The horse I purchased it for has a large jaw (mandible) and cob size was tight in the nose band....
It is my general impression that this should not debated publicly since this is an on going litigation. If "Sandy" has been properly caring for her horses, then there should be no further debate.