http://www.minecraftforum.net/topic/119361-110-tehkrushs-mods-all-mods-updated-and-plasticcraft-smp/#timber Pretty much, you break the bottom block with an axe, and all the other wood blocks break as well. I heard theres one for metal veins as well.
Tormidal alternative for Permissions 3.0? Try bPermissions, PermissionsBukkit or PEX. See which one works out for you the most.