Well, we know already that whatever Putin says cannot be trusted, and treaties seem completely irrelevant at the moment anyhowYes, anything suspended is presumably reversible.
No, he didn't say he was cancelling the treaty. Is a cancellation reversible as well? I'm not sure in this case.
But are those questions the right ones to ask anyway?
It sounds like he made a belligerent gesture in this morning's speech (a unilateral suspension of the treaty), and then a few hours later, hinted that the suspension may be reversible. In return for what exactly?
Make a threat, but offer to then not carry it out in return for something he wants?
'I plan to nuke Ukrainian cities, but it may be avoidable if you give me the Donbas'.