Woah. A long weekend with no /r/circlejerk? Whatever shall I do?
/r/IAmA was shut down while active AMA was going on: https://twitter.com/edfrenkel/status/616662322623459330. That was unnecessary and unprofessional. They could have shut down after AMA is finished.
To be fair, at pretty much any point in time there is something going on there that someone will say they should have waited for finishing.