Snyder had a story when Dick was Batman with him going undercover at an auction and getting what was allegedly the same crowbar that Jason was hit with during DITF. I'm not really sure if I believe that it was since Joker likely kept it. And I don't know if I buy Joker bragging over it then losing a trophy for his victory against Batman.
At the end of the story Dick tells Alfred to toss it in the river though we never see it. I heard Snyder explained why Jason wasn't used in this story but I feel it's kind of needed for a plot like this. It directly relates to his narrative not Dick and Alfred. Sure it affects them but not as strongly. Has this ever been concluded?