I think that is the only jaywalking fine I have ever heard of. That stinks!
Fight the ticket, people quite often win fighting the tickets.
Alternatively just wear it and be a good fellow in the future.
I was booked once for going 75 in a 60 zone. 6am on Sunday. 6 lane divided road. Not another car on the road, except the cop, who was going the other way. Oddly though he apologised for giving me the ticket. The next week, the speed limit was raised to 80 in that zone. doh! $180 down the drain