I understand this line of reasoning, and I think, gun to my head, I would say, play the numbers. But I am not sure Kentucky's defense could have overcome the shift in momentum to Missouri if we'd taken the safety and given possession back. I think that sequence of events would have give Missouri the boost it needed to win.
I doubt that Goodfellow had time to weigh all these considerations in the few seconds it took him to pick up that ball, but we've seen him kick through the endzone before, and it's fascinating that he chose not to in this instance. It really puts one's faith in numbers, versus playing it by gut, to the test.