I don't know what happened, but I'm sure it was a mistake to change your rank. As Suri said it should have been something communicated over PM's or TS asking what happened. Heck Suri even got set to Donator the other day but didn't freak out
I don't know that I agree that this was a good reason to leave but I will respect your choice. We have an open door policy for all ex-admin in good standing with TNS. Also I hope to still see you on the forums and servers.