It's massive because that dead cap would be paying Diggs (minus 3 mil), and now you don't have that on a player.
That being said, I don't think it's wrong if all this reporting is true. Diggs is a great player but we need guys on the same page as Allen. Whatever falling out they might have been unfixable.
Hopefully we move up a draft a top 3-4 WR this draft and continue to invest in the room.