Good on him, it's only right that the council should be prepared to accept defeat on minor details if they intend to turn petty parking infractions into revenue. The more of this the better I'd say. They shouldn't be allowed to slap the same fines on bikes as cars in any case, it's simply opportunism to suggest a bike is capable of causing a significant obstruction when parked.
There is a whole mindset of cynicism in this county's authorities that simply treats the populace as a revenue raiser with total disdain for principle or fair play.