I just listened to the Unedited interview (at least that part) again.
At 8:50
D. Sr.: "He was playing with grandpa. He was getting ready for a nap."
J: "He was with my grandpa"
9:03
D. Sr.: He was gonna be good with grandpa by the campfire.
At 9:29:
D. Sr.: "He (grandpa) immediately shocked", then says that grandpa said "(I thought) he came up to you."
Doesn't sound at all like Ggrandpa put him anywhere for any nap.
Ooops...forgot the link:
[video=youtube;mwM1oG3z358]https://www.youtube.com/watch?v=mwM1oG3z358[/video]