@squek
Im not saying there isnt anything wrong with the motzieh shabbos theme. Dont worry i would be the first one to vote agaisnt girls and guys hanging out!
The thing is that by usin threats and force they arent going to stop the situation. There is obviously something much deeper which is wrong. I dont know, im no rocket scientist but usually you look for the root of a problem to get rid of it. The root isnt that these kids dont realize their menhahel disapproves! The root is much much much deeper, probably touching things like messed up chinuch, hashkafos skewed in their mind, lack of loving teaching ingraining these values in them, etc.
By using negative reinforcment they accomplished 3 things:
1) made kids who already dont love Judaism and Rabbis HATE rabbanim
2) made kids put their parents on the black list if they arent already on it since now its not just their Rebbbe giving them mussar but their parents telling them where to go
3) moved the hangouts to somewhere else
I dont see anything fixed by this, do you?