I have no clue if stockingup is part of foundering. All he gets for feed is hay that's grass and timothy mix. And a 1/2 pound of oats once a day. Farrier thought the stockingup was do to him not moving much. Farrier didnt see bruising so I don't know what to think guess if it just happened it might not be visable yet.
Is your horse overweight? (increased risk of founder)
My horse had shoes on the fronts and when the ground became frozen and rutted we had to put pads along with his regular shoes on all four.
However,it is always better to be safe than sorry and treat this like a founder case. Although I truly hope that isn't the case :(
Jaydee: according to the OP the horse has just shoes on the hinds (pads and shoes are on the fronts).
Horses CAN get abscesses and bruises even with shoes on. Once the
Ground gets hard and rutted it doesn't matter if the horse is shod if the hard rutted ground is poking a tender spot that the shoe isn't covering.
(last year my horse developed a stone bruise that turned into an abscess in his hind even though he had shoes on all four hoofs)