If the replay official deems the clock error to be egregious, he can always correct it.
"However, the replay official may correct egregious errors, including those involving the game clock, whether or not a play is reviewable."
But, as the play was reviewed, the replay official may correct the clock even if the error isn't egregious.
"Situations that may be addressed by the replay official:
b. Clock adjustment and status when a ruling is reviewed."