Any hints on why they might be infuriated? And you, in particular? It is not my goal to alienate people - it happens inevitably - but there is only so much I can/am willing to do. I'm willing to try and make the transition as easy as possible on everyone though.
Ah it's always personal opinion on what wad/mod is better when matters like these come up. Some of the members will be happy it's being taken on the same people who handle AOW... some won't. As you have mentioned it is inevitable that some will be uncomfortable with what they see as a sudden change of leadership/ownership of a wad/mod they enjoy... however any negative feelings towards this change within the clan will be handled by myself and co-leaders as peacefully as possible, the majority of the players within skulltag do not need to put up with any of my clan member's negative opinions. However personally I'm glad that GVH will be in very capable hands, I can understand completely that you want to make this as easy as possible for everyone. That's why I'm more than willing to rally up those of the <GRC> who are willing to help, to help out wherever's possible.
Look at it this way, GVH would not get updated at all without Eruanna and the others stepping forward to help out. You (and your clan?) should instead of griping about who's running the joint and instead try to come up with suggestions for the newer instalments. You're the playerbase, you understand the game more than the devs in terms of gameplay so you play the important role of shooting ideas off to the devs on what can be changed to improve the experience. 
Now don't get me wrong with my previous statement, I am in full support of this change. Those of us who aren't are more than welcome to their opinion if that is how they feel as long as they do not interferre with others' enjoyment of the game. I do not approve of my clan ruining anyone's enjoyment and as noted above will be dealt with appropriately. And of course that's one of my main intentions. There is often people complaining at how something should be changed on my server. The least myself and the others of the <GRC> can do is note it down put it into consideration on how important that change should be and refer it to where it may or may not actually come into affect. We play GVH for fun, we want it stay that way.