Only up to a point, it seems to me. Everyone has assumed that Putin, no matter what his imperial pretensions, was a rational actor and could be counted upon to come right up to the brink, but not actually fall over. He has proved everyone wrong - this is an act of sheer lunacy. In one fell swoop, he has reinforced both the Ukranian sense of nationhood and NATO's solidarity, the two things he was apparently seeking to undermine. It even has Finland and Sweden contemplating membership. Meanwhile, the rouble disappears even further into the basement. The guy has egg all over his face. He has gone out on a limb and is blindly sawing through it.
The west needs to punish him severely - but it also needs to provide a way for him to climb down before the limb is completely sawn through. Otherwise, he might become even more desperate. Richard Nixon was, I think, the first to use the "madman" theory of international relations, i.e. to give opponents the impression that he might be sufficiently bananas to unleash nuclear Armageddon. Putin is now utilising the same language. The worry is that he really is sufficiently bananas to follow through with at least tactical nuclear strikes, e.g. on a Ukranian city pour encourager les autres, as Voltaire famously put it.