While hanging out at Camp 4, we actually had quite a bit of fun. Two of the funner moments occurred when the Messner let go. On June 8, 2012, the Messner unloaded, dusting the camp. The June 8 avalanche exposed a nice layer of blue ice in and around the Messner. Then the real storms came. On June 12, 2012, the Messner unloaded again. I took this video; here is what it looked like:
Of course, this wasn't the only activity on the mountain. The Valley of Death, below Camp 4 was constantly rumbling. There were a couple times while lying in my tent where I caught myself holding my breath, hoping that the rumbling wouldn't come any closer. I laid in my tent playing Jet or Avalanche--guessing whether the sounds outside were caused by a jet or an Alaska-sized avalanche.
I still think skiing the Messner would be really cool. It's just that while I was there, and given the conditions, I didn't think it was worth it. Check out this guy's adventure in the Messner on June 16, 2012 (Aaron and I flew off the mountain on June 16, 2012):