NFR: I though PL had strange refferees?

[K33NY]

I was just watching highlights of Herta Berlin match and I sit quite stumbled and shocked over the refferee in this match

Nurnberg was leading 1-2 and then a weird situation happends, when clearing a ball a Herta Berlin player shoots for goal a high ball should end up in goal, but a Nurnberg player uses hes hand to save the ball on the line, on the rebound and new Herta Berlin player scores, BUT the refferee instead whistles for penalty, and gives the Nurnberg a red card, ok so it shall be a penalty then, wait, NO something even more weirder happends.

The refferee goes to the linesman for a long talk and withdraws the penalty, red card and goal, they dont explain why on the video so I have n clue what just happened....