Full character reset

[BeVolescu]

My friend and I have some progress on the server, and we want to start from scratch. 

We've reset our island & inventories and cleared the questbook progress, but we can't reset Thaumcraft, Astral Sorcery and ProjectE progress (e.g. JEI shows the unlocked Thaumcraft recipes, we still see the discovered constellations in the night sky and we still have our ProjectE EMC). There might be other mods as well that need to have our progress wiped from them.

If it's possible to have the mods progress wiped, it would be greatly appreciated. Our in-game usernames are BeVolescu and SlingCraft.