To be fair, before that, he was asked “Which is worse, Jeremy Corbyn as PM or no deal”. To which he gave the standard Lib Dem waffle of “How’s about a new unifying figure”
Given that context, I can sort of see how when pressed he might have thought he was still answering which of the two he thought was worse. I’m absolutely sure he’ll be out to clarify that he thinks no deal is worse than Corbyn as PM very shortly.