Adjacent to the circumflex nerve is the circumflex vein and artery, which provide circulation to the lamina. When the sole is thinned across the toe, these structures are easily damaged - which can result in circulation problems for the lamina and result in an inflammatory response known as "laminitis."
Wish there were more good farriers in my area. There sure seem to be a lot of bad ones.
And overall I am just tired of all the drama that seems to surround horses and horse people.