You are correct, it was Michele Bachmann with I believe Steve King and one other who confronted Boehner.
Boehner ended up allowing a vote on the sequester which has now been given away by Ryan.
But Boehner later stabbed Bachmann in the back by pulling her off the intelligence committee. Now Bachmann has announced she will not run again.
I’ve said it for more than a year now, Boehner has got to go, must be driven out of office asap.