Nowt wrong with a good party bomb! ....whilst the Horde are partying, we sneak in and take over
I chuckled Tis true... Gnomes are a bit strange in the old noggin... But I KNOW you own a pair of those perv goggles... come on...you know you do! /wink
No, it is under Horde Sin'dorei control. Quel'delar chain, you are let in by Halduron, the guards are all wearing Silvermoon tabards. The SSO is still (as of wrath) on the Island, but the Sunwell itself is under Sin'dorei control.
Now, whether Sin'dorei control is also Horde control, that's a different question