This theory fits right in into what Blockstream have been doing: "The Kleinman case is not about getting money - they probably have no proof to get it, otherwise they would have presented evidence in form of documents that showed that Kleinman owned x% of the bitcoins. The whole case is financed by Bitcoin Core, and the goal is that Craig reveals exactly what bitcoin addresses he owns - they just want this list. The moment they have this list, they will block these addresses with a softfork on the Segwit chain. Probably an idea from GMax - I think it was 3 years ago or so, when GMax said that Satoshis coins should be blocked forever. "
Just to be clear, while I think this theory is pretty much spot on and most likely what they are trying to do, and I agree with it, I am not the one that thought it out, I have put the quotation marks for a reason :-) So, I am not the brain behind it, but my brain thinks also this is most likely what is happening.