He didn't have to, but it would have been nice for him to block the 9 tech, blitzing lb, and blitzing db, but he whiffed. All he had to do was chip to give an extra half second of time to allow plays to fully develop.
He was going to get Goff and Gurley injured. He never held himself accountable as a veteran of the team for missing blocking assignments and dropping passes. As a coach, you can't have your potential franchise players getting injured. As a coach, you need your veterans to act like leaders, understand their roles, and teach the younger players what it's like to be an NFL player. And the Rams have been the youngest team in the league. As a coach, this transaction was an easy decision.
Lance, I wish you the best and hope you've learned from your mistakes as a Ram. Green Bay is a class organization and will not tolerate these shortfalls.