He was clearly in the endzone - a yard deep.
https://www.youtube.com/watch?v=OsAfy1YUO78
And it wasn't Burnett's responsibility to get his team into FG position. He did his job, the rest was up to the GB offense. Run, run, run, punt definitely didn't get it done.
I just don't see how you can say Burnett's decision to down the ball and put it back in the hand of the offense is "poor execution, stupidity and ill-advised caution" without criticizing Lane's decision not to down it in the endzone and put his team on the 20?