My friends horse survived it but it was hard work, weeks in hospital then the never ending after care.
I think I reacently averted a near disaster, I brought my horses in for a short while just to groom so while I did one the others were in their stables, I then chucked them back out and went home, a couple of days later I realised that I hadn't taken the droppings out of their boxes. When I went to do it I noticed that on the dried droppings there was a complete layer of sand clearly visible - panic stations, I went straight to our local tack shop and got some psyllium which we gave them every day for a week, the manufacturer then suggested giving it once a month for 7 days for maintainence, but I just do the test once amonth and if I notice a build up will give the psyllium, the reason being that Bo hates it and it is a nightmare to get him to eat it.
J x