Personally, I think the vagueness of the event announcements, combined with the "let's read too much into things"-attitude of the community at large, is the root of this problem. People built up their expectations of the 'War', and when it wasn't met, wanted things to change. And while I believe ScaredGirl holds a few fair points, so does the other side. Allow me to explain.
ScaredGirl, you mentioned that there's been a lot of whining, and that you only expected feedback after the tournament. Now, the problem with that, is that Elements isn't just luck-based. You can design a deck using the very basics; knowing what the cards are and do, and probabilities. Using this, I guess quite a few people decided 'Evil' was overpowered. This would be based not on this event, but on prior PVP knowledge. After all, there's been PVP events, as well as random games, for a while.
The other problem, though, is the overall competitive attitude that was created. I'm not holding ScaredGirl responsible for that, but the enthusiasm of some players. What was meant to be a fun event, turned into a crapfest of 'my side is better' quite quickly. Next to that, people got disappointed with what they ended up with. Imaginable, of course, but this is the problem with expectations: They don't always come out. There's two things you can do; try and change it, or accept it. The latter would've been the better option.
All in all, I think this event shouldn't be put on hold, but restarted altogether. make it clear that it's for fun, not for a huge prize-pot, and perhaps some of the e-peens could be left at home.