There was an article with Vlaustin (from memory) over the weekend talking about the back 6 and Grimes' role in the 6 and how he has now replaced Rancey. As part of the conversation, he said Bachar and Shorty are capable of playing close, but are given an attacking role first.
The whole conversation was about how the back 6 have evolved into complimentary roles and how they try look after each other with their various weaknesses and strengths. It read to me that Shorty was given licence to be loose, as the others would cover for him. This enables them to focus on "negating" rather than them needing to be creative and attacking when they have the ball. Seems perfectly reasonable to me and I take it that whomever plays the "Short" role, will produce the same outcomes as Jayden, maybe with less output.