I'm sure you know this, but never leave live prey in the enclosure with your snake; ive seen some nasty pictures of irreparable damage done. Im assuming you left dead prey in there, at which point the prey might become too cold to simulate live prey. Other than that, it seems that an eating strike is quite normal; however, I dont think anyone likes it when their snake stops eating. Try cutting into the brain cavity of the prey to expose brain matter, I heard about this and it seems to work to get the snake's senses in feeding mode. What are other opinions on this technique?