Fourth vote :), I have only run into cut worms once, thankfully, but it was what you describe. The plant was snipped off and the top was just laying there.
"The future is something which everyone reaches at the rate of sixty minutes an hour, whatever he does, whoever he is." C.S. Lewis
"When the whole world is running towards a cliff, he who is running in the opposite direction appears to have lost his mind." C.S. Lewis