According to ESPN’s Xuan Thai, the four-time MVP quarterback spent the past “several days and nights” at Sky Cave Retreats — which is located on hundreds of acres of forested land in southern Oregon — before leaving the dark room and facility on Wednesday. Per Thai’s report, the owner of the facility — Scott Berman — the rooms on site are 300 square feet and are partially underground “devoid of light, with a queen bed, a…