Have a biere de mars and a kolsch lagering right now in my lagering fridge. Would it be ok to pull them out for a few days and leave them in my 60* basement so I can control ferment temps on 2 new batches I am going to ferment? Probably only going to precisely control temps for the first few days, then bring the new fermenters up to my first floor, with an ambient temp of 66-67, at which point I can resume lagering. =
Probably. Give it a shot.
While I try to schedule things to avoid that situation when I can, I have done that very thing without problems. If the lagers are truly done, you might see some off gassing of CO2, but no discernible effect on the beer.