Fascinating story. I remember reading a novel about this by (I think) Ted Willis (but if it was there's no trace of it on Amazon) right back when I first became interested in wargaming in the 70s.
The other story I read which gave potential scenarios is The Buckingham Palace Connection about a British attempt to rescue the Romanovs. I was first interested in that story by Tom Mangold and Anthony Summer's File on the Tsar, and spent months rummaging through the British Library looking for various books they referred to. The fact that the books were missing seemed to CONFIRM the conspiracy theory they had outlined. I started writing a screenplay about it, only to see Ted Willis's book get in there first....
Ah, we were young, there seemed to be conspiracies everywhere. Having spent many years since working with a writer who specialises in conspiracy theories, his opinion of the case they advance is a little more cynical. In fact he used a word referring to two spherical objects normally found in a pair.
Doesn't stop it being perfect for RCW scenarios, though. Wargamers don't need established fact, they need inspiration.