Probably the most relevant sentence from that article:
> The role of Mikhail Gorbachev in the January events remains disputed.
replies(2):
It's pretty clear that he was aware and gave orders. There're testimonies that next time Alfa unit asked for written orders. Guess when Alfa unit was given unwritten orders and who could give them such orders? If they acted without orders, why no heads roll back then?
Regarding Lithuania's January events, other units did refuse to operate even back then. IIRC Pskov airborne unit was given unwritten order to fly to Vilnius, but the commander refused.