sad part is it has nothing to do with betraying them persay. If you join SC they tell you to F off (eventhough you didn't betray or get a faction hit). The text in that instance says nothing about hurting your druid faction or nothing comes up sayin you did.
That is allegedly why i can't buy my spell. I think the MQ and SC quest needs to be looked at a bit to add this little nugget in. Especially in the SC faction. like some kinda of note after the text that doing this quest would hurt your faction with X. As it is now, you get some invisible hit but without losing your current faction consider. Meaning, you are dubious to the druids when the zone first went up and even after SC quest your still dubious but they refuse to talk to you. This doesn't make sense to me.
The clicky Writ also does nothing to help faction to be able to buy the spell. Another thing that doesn't make any sense.