I believe that Mr. Scary Illicit Eye Surgeon told Anderton that the effects of the droopy-drug would only last a half-hour or so, and that it would hurt like heck when his face re-solidified.
The ending cannot be in John Anderson’s fantasy or dream because before he was haloed he did not figure out who the killer was. Agatha did not tell John or his wife who the killer was and John had not enough time to figure that out before being haloed. Only John’s wife figured it out later and saved him. There is no reason for John to make Lamar the killer in his fantasy life. He’d be living happily ever after with his son as it had always been his strongest desire.
Deleted…not feeding the ZOMBIETHREAD!
Saw the future and didn’t like it