PFHAHA I found a plugin that you can disable certain directories in backups and an example config has motherfucking dynmap disabled mother of fuckign god my fucking sides are in orbit
http://dev.bukkit.org/bukkit-plugins/autosaveworld/pages/auto-backup-documentation-page/
excludefolders example:
excludefolders:
- 'plugins/Essentials'
- 'plugins/dynmap/web/tiles'
- 'plugins/A*' #wildcard, will ignore any folders which are in plugin folder and which names starts with A


