It looked dirty at first, but when you see the replays, you have to wonder how much Ballard put himself in that position.
Koivu was pretty upset that there was no penalty, but Brodziak administered justice the next time Martin was on the ice. (I use the term "administered justice" loosely- it was a pretty even fight, with Martin getting the better of it, but it's the thought that counts.)
The Wild were down 3-0 when this happened, and scored soon after on a PP, which started their comeback.
Nino (former Islander) scored the GWG and the Wild won 5-4. Ballard was taken to a hospital, but seems fine. So, assuming that Ballard is actually ok, it seems that all's well that ends well.