I actually use both apps, I find Organic Maps a lot nicer for looking at a map and navigating by foot or bike, and Magic Earth seems to pick more sensible car routes some times. Also the live traffic data makes it more fitting for car navigation (Organic Maps doesn’t have traffic data).
For me I’d just say oh well, gotta fix it when I’m home again.
Otherwise I’d probably write some script on the server, which reboots my router when the server either doesn’t have internet anymore or can’t ping itself.