I did a trackday in June at Llandow in S Wales.. and almost got taken out by a bike which had spat it's rider off and then skimmed the LHS bank and came back onto the track and came so so close to taking me out.. here is the clip from my mates bike! im the one on the black bike which you see fly past!!
seemed to slide for ages,hope your mates ok n not too much damage. 1 of the reasons i wont do a trackday getting caught up in someone elses accident and your PnJ f**ked.
That wasn't sliding, that bike was riderless as it looks like it spat the rider off when it high sided.
one of the reason I can't afford to do a trackday. Some nutter crashing into me. £12k down the road, not my idea of fun.
I suppose if you want risk free track days then there's the option to buy a cheap track bike as there's loads on eBay. You can even hire a bike trailer for £30 per day.