SJ definitly going to be managing his quad/groin issue till he retires.At a guess, if SJ isn't injured, I'd say it's Webster trying to give Metcalf some responsibility to get him more involved in the game in the hope he gets more involved in general play.
Quad/groin issues you can kick with almost full range of motion, but goal kicking motion really pings it for some reason. Don't think it's any deeper than that.