It's a random outcome, just use a quick save before you get eaten and quick load everytime you get an undesired outcome, this works for any and every random outcome. You can use the scroll wheel to go forward and backwards along the known text history.
Have this exact same problem. I don't think it's random, or maybe my luck is nasty but i've got the "I didn't ask if you wanted to" line like 20 times in a row now. Or maybe I'm doing something wrong. Can someone help?