Question #2: Official error during play

[ljudge]

Here's my weekly post. Again, it's a kicking game question with an officiating error. How would you handle?

K's ball 4th and 10 from K's 20. K punts the ball to midfield. During the kick R signals for an invalid fair catch and ultimately recovers the ball at his own 45. The back judge and line judge forget to whistle the play dead. R advances for a TD. During the run R clips a team K player at K's 40 and then during the advance team K's coach is on the field screaming at the officials for letting the play advance.