We didn't actually go back up and ski on Monday. We hemmed and hawed about it a bit and ultimately decided to take a day off. The temperatures were going to be fine (low to mid-20s) but it was cloudy with very flat light and no new snow overnight, with just a little snowfall forecasted for during the day. We try to be as active as we can, taking advantage of whenever we're not working to get outside. But sometimes it's okay to take a break, give our legs a rest. And that's what we did.
Edited to add: Actually, they ended up getting around nine inches of snow on Monday but the avalanche danger closed the canyon road between Alta and Snowbird and so all the people trying to leave at the end of the day were forced down the by-pass road. It was taking people 3+ hours to get out. We may wish we had been there for the skiing but we are absolutely grateful that we missed out on the drive home.