The Pats waited this long because they feel the guys they have in-house proved that they could take over Seymour's spot. Otherwise, they would've held onto him and some other DT would've been cut.
so I guess theyre basically telling him he takes too many warmup pitches once he's on the mound...cause I believe he used to go walk from the dugout to the mound but starting jogging it once they started fining him