Ric, wow, I've experienced the "Other" side of the coin on a pretty similar scenario!
Mine wasn't a fun run, but it was a 5k on the day of a 10k at some MT event. I was in a period of doing loads of 5ks at the time, and couldn't be fussed with doing the 10k for the 3rd time.
Won it, but didn't act Big time. Thought it would get the usual level of well dones from the club, that top 5 top 10 in other races would get.
Instead, got scorn from the chairman, and another chap (the one who got me kicked out of the 10k this summer). And this was a club who only ever won the occasional FV60 prize....in races with just one FV60 in!
More surprisingly, the local "Nice guy" winner of the 10k, poured abuse out all night on twitter, everything from me "being scared", to doing a slow time, to costing some 15 year old his deserved win! Shocking, from a chap who is notorious for obscure race pot hunts!
Whole thing left me quite gutted, and wished I'd just done the 10k, and come 6th or whatever!
Definitely one for the rage locker for those times in training you need some fire! 
Edited: 29/12/2012 at 20:17