I just finished reading this book, and it was very good, but I'm still not exactly sure what the ending means. I think it was meant to be ambiguous and left up to the reader's interpretation, but what are your opinions? Here are my two theories:

1. I originally thought that the ending was Teddy's awakening after taking the pills for his headache, meaning that pretty much the whole second half of the book was a dream. This seemed unlikely though after I thought about it for a while.

2. The more likely interpretation in my opinion was that Teddy really was Laeddis and had relapsed for the last time back into Teddy, meaning that the white package with the metal was probably a straight jacket or tools they were going to use for the orbital lobotomy.

What do you think the ending meant?