It's happened to me too, but the cold water numbed it and I forgot about it haha.
Also, i can't believe your steeple races are only 1500...
Yeah hitting the barrier is the worst. At least you didn't faceplant :P
As others always say, the Hurdles will always win.
Remember, there's time trialing and there's racing for place. Qualifying is the focus this time of year.
Impressive finish to the race despite the hurdle incident. Take care of that knee now!