That's why they were never going to agree to Corbyn as a temporary PM. It's also why they hyped themselves as the Party of Remain^TM - because it took advantage of a strategic split within Labour.

The LD leadership has never, ever been honest about its true intent and positioning. Clegg ran a similar scam when he went from being a "Privatise everything" Orange Book contributor to "I will never, ever raise tuition fees and I'm also a safe choice as a non-Tory" in the run up to 2010 to "Now that we're in coalition it is with great regret and deep sadness that I have to announce that I support raising tuition fees."

And so on. There's also video of Vince Cable looking not particularly upset about the result of the referendum, and Clegg writing for the FT that a soft Brexit would be fine - while the LDs were trying to sell their "We Are Remain" shtick.

It's hard to imagine just how corrupt and cynical the lies and manipulations have been. The point was always to get Brexit over the line, to keep it there, and to destroy the British Labour left. And no lie was too big along the way.