We have 10 games until our next scheduled off day and then another scheduled off day 6 games after that. So if we let Monty go one more time and then bring Lester back, with those off days, I think that would roughly give everyone an extra day off between starts the next 2-3 times through the rotation going forward before the last stretch of games in September/October. My math may be slightly off but think it's roughly right. Looks like this is happening, good to get everyone (not just Lester) a little extra rest.
I don't even consider it extra rest. They are in the middle of their longest stretch of the year without an off day (20). This is just Joe fixing what the schedule makers screwed up. Add that its the time of year where team could very likely be making up postponed games, and its kinda ridiculous. Its just serendipitous that its Lester instead of random AAA call up.