Green Bay Packers running back Jamaal Williams put a nasty stiff arm on corner Richard Sherman. The stiff arm was such a good one that Williams actually dribbled Sherman's head off of the ground.
That probably hurt Sherman's pride more than anything.
This looks like the tackling of a 1-5 team. You've gotta get lower than that if you're going to take Williams down in the open field. If you don't, your head is going to get dribbled off of the ground.
This is also what the end of a solid career looks like. You're just a step or two slower than you used to be and attempting to tackle running backs ends poorly for you.
It might be that time for Richard Sherman.