I must say I know a few Marshalls on these trails all of them hell of a nice guys, doing great work to ensure people stay within bounds and contributing time and energy for all of us to enjoy the trails. Did you attempt to actually talk to the guy? Or just immediately jumped to conclusions and accused the Marshall? I must say the actual rule is a bit vague, as it says Sunrise to sunset, "No night riding" seems to be the key point here. Tygerberg gives specific times, while BH doesn't. I would intepret sunrise with a "no night riding" sentence after that, to be that twilight would be fine. But perhaps like Rudi said, the Marshall was out making sure you don't put yourself at risk. You wouldn't know if you don't politely ask? Now would you?