What is a sack with a tie sack?

A sack in American and Canadian football is when the quarterback is tackled behind the line of scrimmage, resulting in a loss of yardage, on a passing play.

http://www.sackwhack.com

The "initial sack" refers tp 1st base. tje "keystone sack" refers to 2nd base.

Brett favrehe gave it to him he laid down at the last play of the game

Yes.