Why were you standing? How long were you standing? What kind of road? How was the traffic? What was your speed?
Unless you were obviously
screwing around, I would take it to court. Dress nice, be polite, know what you're going to say. If you find references in any motorcycle safety literature talking about standing in certain instances, quote them.
IMHO, that law was passed to combat "jackassery" on motorcycles. If you weren't being a jackass, I think you have a chance of proving your case.
I go to court frequently, I've seen much worse behavior excused.
I would not
hire a lawyer in this case, as its not complicated at all.