Oh no, nothing like that, sorry to worry you! You get a few and most are little trivial ones like that where the bike's fine and you're fine but you've broken a £15 part and you're stuck. I think I did 5 days all told and spectated for a couple more, which is a good few hundred people taking part and saw just a handful of crashes, only a couple of which would actually need a van (or a dustpan and brush in one case). But I think every one I've been to has seen at least one person with no plan B, stuck because of a minor thing, or desperately getting help from strangers. A wee bit of planning removes that stress.
Also, it depends on the rider- mine was because I was having a blast and trying to go faster, simple as that, I overdid it. Dirty Baz's on our big tracknight was much the same, too much power on cold tyres. Ianofbhills was because he was chasing personal bests in the fast group, and he was pretty damn rapid before he started pushing it. If you ride with your head engaged you're no more likely to crash than you are on the road, and it should still be fun, and evenif you do, chances are the consequences will be less too. I can't think of many places on the road I could crash at 70 on a corner entry and still ride home
It's all down to you, really. So don't stress! There's a very, very small chance of being taken out by a knobber but then, that's riding isn't it, I reckon that's more likely to happen on the way there
