Bring it back up to 70F and plan on waiting a month or more as the SG slowly crawls down to 1.005 or so. Augmented ciders generally have very long fermentation periods and can end up at 0.995 or lower. Bottling at 1.020 will result in explosions.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk