Roger Stone has a reputation as a political operative. My guess (firing by Trump) is he went too far in some psyops and Trump refuses to associate with that.
Everyone knows that polonium poisoning is associated with Russians (Russians deny this, of course). Smells like psyops to me, as I assume that polonium is absent or too small a dose to kill. If Stone goes to the FBI after 20 January, I would find it interesting.
Roger Stone has a reputation as a political operative. My guess (firing by Trump) - - -
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Not likely fired, being as Stone still meets with/consults with PE Trump.
And especially being as Stone is now writing the story of the election; ie of TRUMP WINNING THE ELECTION.