OK, responding to both your points;
1) Perhaps the instigation of a putsch/coup by destabilising the country is what the West are aiming for - it is the logical solution. If everybody hurts, eventually they will start questioning the bollocks that state media is spouting and start to realise the reality of the situation, especially the family and friends of those who have been converted into sunflower fertiliser.
2) The entire country has to be seen as an international pariah. As I posted earlier, if they come out and condemn Putin and his SMO then the Russian media will simply twist it as them being forced to deliver a false narrative - yet more evidence of the West's anti-Russian campaign.