The facts are very much in dispute, and lead to different outcomes in my mind:Elon made the very best decision possible. The expectation anyone could coerce a USA private entity into engaging in war with a State in an overt act of war is reprehensible.
1) One account claims Musk actively intervened in the war to protect the Russian fleet - proactively shutting off Ukrainian communications to do so. And thereby protecting Russian warships that were, and continue, to lob hundreds of missiles at Ukrainian cities, civilians, and civilian infrastructure. This would appear to fall under the category of aiding and abetting Russian war crimes - although probably not prosecutable.
2) An alternative account claims the satellite coverage was already ringfenced - preventing Ukraine's desired use for the attack - and Musk refused DoD emergency request to un-ringfence. If this ringfencing was in line with terms of service at the time, Musk declining to provide assistance outside of terms of service is understandable, although actively refusing a government request for assistance, that would cost him nothing, is far less understandable.
In any case, Musk's other strongly pro-Russia positions (basically echoing and promoting Russian propaganda) make most feel the interpretation falls closer to #1. And his claim that his actions were to prevent a widening of the war is a completely laughable explanation.