Just as I was leaving to go stop by the department and say hi to people and go to our Graduate Student Seminar talk, we got another flurry of emails to turn off the instrument. This time, we ended up starting to come down about 45 minutes later.
The process of termination is pretty cool--helium gets vented from the balloon, the balloon is ripped so it comes back down, the payload falls, and then a parachute is deployed. After we hit the ground, the parachute detaches (TIGER 2001 had some issues with this step), and the instrument is on the ground.
I plan on updating the blog at least once more with the details of the (very unlikely) recovery operations this year, if any.