Here's a fascinating article (to me at least) detailing how quarterbacks can get themselves sacked. Thought I'd share it in an OL-oritented thread for informational purposes. http://www.sbnation.com/2016/11/18/13676686/nfl-quarterback-sacks-offensive-linemen-pass-blocking
A lot of people tend to put all the blame on linemen, but there are many situations in which quarterbacks can be responsible. When OL get into their kickslide, the goal is to get back to a certain point where they anchor, based on the QB's drop and protection call. Sometimes, a QB misses their point, and the OL get the blame.
This can also happen in the run game, where running backs, well, run the wrong way. They'll hit the C instead of the B. They'll bounce it outside when the line is expecting it inside.