No need to worry, Mr. Bee Boy is going to make it!! The farrier came out to the barn last night to look at the crack and concluded that it was very superficial and there wasn't reason to be concerned. He doesn't think the crack is going to get any bigger and luckily it's not very deep. PHEW!!!!!
Bee and I ended up having a lovely evening. I rode him bareback in the lower arena (the lower arena has no fence and is surrounded by a lovely stream and lots of trees) as the sun was setting. Riding Bee bareback is like sitting on a wide fluffy couch!
So there is no need to worry, all the horses are well.