According to this, Cristobal called time out because he thought Tech might run a fake punt:
The No. 4 Miami Hurricanes fell just short of securing another dramatic come-from-behind victory Saturday in their 28–23 loss to Georgia Tech at Bobby Dodd Stadium.For a second straight year, the Hurricanes saw their undefeated record spoiled by the Yellow Jackets. And for a second straight...
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"The clock ran down to the two-minute timeout. But after the break, when Georgia Tech lined up in a punt formation, Cristobal burned the first of his three second-half timeouts to get his defense prepared in case the Yellow Jackets were about to attempt a fake punt."