Yes, you can ask a mod politely to roll it back for you. This will revert it to when it was normal. (but take all your stuff out of your chest if the grief was nereby first.)
Generally if your griefed just simply /pm a mod and tell them what happened and they will fix it and ban whoever is responcible.
You don't need to make a post about it unless
1. It happens multiple times
2. You're being harrassed.
3. If it's urgent. ei your a city owner and going on a trip for a while but you didn't have time to get a mod to fix it.