From his wife's Livejournal:
On Wednesday afternoon, June 1, 2011, Joel had a respiratory depression that caused a heart attack, anoxic brain damage and major organ failure. Despite the very best efforts of the paramedics and the team at Hennepin County Medical Center, Joel was pronounced brain dead at around 5:37pm Thursday June 2nd, In accordance with his wishes, he shared the gift of life through organ and tissue donation.
