‘Jets coach Al Groh, unhappy with the play of his safeties, seems prepared to make a lineup change for Sunday’s game against the Bills (3-4). It’s believed starting FS Kevin Williams will be replaced by Scott Frost, who came off the bench in the last two games. Special teams star Chris Hayes, who has been waiting for his shot on defense, also is practicing at free safety this week and he could split time with Frost in the game.’