Mercifully, I had made an all-butter crust at my own house before visiting the in-laws for T-day. I used Shirley Corriher's baking upside down blind method. Took it along but planned to see if I couldn't do better at in-laws. There, I tried King Arthur's recipe (part butter/part shortening) and the same bake upside-down method. When I went to unmold and set rightside-up, the crust was so underdone that it stuck to the parchment to the point I just had to throw it out. :( Thank goodness I had made the trial one at our house the night before!