So here's what I noticed when I watched the episode. Stewie picks up a wooden return pad which can be used to go to a different time aswell as the time machine. Now when he breaks everything, you hear metal clanging. Not wood breaking and when they show the wreckage you don't see it at all. So my theory is Stewie looks in his backpack in a future episode and see's it and goes back in time to save him What's your guy's theories :3
I totally agree with what you said. But I think Vinny (the new dog) is gonna be involved somehow. Some evil plot or something to that nature. There is just something not right about Vinny. LOL