Text Message From The Dead

Did you happen to see the story about the text message from the dead?

A woman was killed and her body stuffed in a barrel, oh, and she was decapitated. The police suspected a guy but didn't have the goods on him, apparently, and they didn't know where the woman's body was.

So they came up with the idea of getting her cell number on a different phone, then texting the guy they suspected, as though the message was from her. "Just wait til I got better," the message went.

The guy went out to where the body was, I guess to double check that she was really dead. And the police got him.

Why if you cut someone's head off would you need to double check that she was dead? Perhaps the murderer wasn't in his right mind when he did it and wouldn't be in his right mind later either. That's the best explanation I can come up with.