I lost 3 or 4 yards before. (Investment went under) And it sucks. I was kinda in a daze for a month, but later I realized it didn't change anything. From there, another lesson was learned.
To the guy who bought at 84k: I wish you weren't on margin. Then you can wait it out. I would take every penny you can scrounge up and move it into your margin account. Start going into super-frugal mode. (like our good friend GREG :-) ) Do whatever you can. You don't want to be paying 10% for margin interest.
Knowing Murphy, once your broker forces you to liquidate, Brk will shoot up. I remember reading a message a few hundred posts back. It was titled SELL BRK NOW (or something like that). Curious, I opened the message. It said: "Because I just bought Brk! I had a good chuckle. I think we all know the feeling.