TL;DR

This is my 2nd end grain cutting board.  I am really happy with the glue up and how it looks, but have an issue with some slight warping after moving it from my shop into the house.  Any suggestions?  More details below.

The maple was kiln dried, and the Tigerwood was sitting in a friends garage for 3 years (remnants from his deck build) before using them, so I know initial moisture isn't the issue.  After the 2nd glue up I ran the board through a drum sander to flatten it, then used my random orbital to clean it up before using my router to add an edge profile, and finished it with 2 coats of mineral oil.  It was perfectly flat after oiling while in my shop, but moving into the house, the next day it developed a slight twist, probably less than 1/16" worth.  I live in the Pacific Northwest (Oregon) and my shop is not heated.  The last week when I have been working on this has been surprisingly dry and cold for Oregon, temps ranging from high 30s for the highs, to low 20s for the lows.  The wood has been sitting in my shop for a few months now, so it was acclimated to the shop.  I believe the issue is moving into the house and the difference in humidity/heat.  Is there anything I can do to help prevent this besides having a heated shop?  My first cutting board did that as well, and I put some rubber feat on it and any rocking is unnoticed.  The weather was much more mild when I made that board, temps more in the 40s and 50s.