They probably will get Macklemore to do the Super Bowl halftime show.
I see a slippery slope here. Political statements are not allowed on the field by players. Does that include owners in their offices? If the NFL really wants to keep the owners out of politics the team is going to give up a high draft pick. That will stop them.
At some point the genie is out of the bottle. Think hands up and Jerry Jones kneeling during the national anthem. He was scared and so is the NFL otherwise valuable commercial time would not have been given to the Colin Kaepernick kneel.