We're getting tons of reports in of Wintergrasp behaving a bit oddly today, and I can confirm them to be true on my home server of Cenarion Circle. Wintergrasp battles are lasting, at most, 5-10 minutes with no more than 10 minutes between battles. Good for farming Marks of Honor, not so good for trying to kill Archavon and/or Emalon.
If this is how you try to lower the lag Wintergrasp causes on servers, I think the quote "ur doin it wrong" applies. In all seriousness, I'm kidding about that and this is obviously not working as intended. Considering the Mark and Honor gains people are getting from this, I wouldn't be surprised if we see some emergency maintenance and rollbacks soon. I wouldn't get too attached to your gains this afternoon.