I appreciate the fact that Trump was trying to give Iran an excuse. People on my TV say that it's likely Trump heard this in a briefing about some intercepts showing that it was some kind of individual over-reaction (or maybe the drone slipped into Iranian airspace briefly of something.) The fact that he says "If I'm right, and I'm right a lot" indicates that he knows something that isn't public.
Whatever, any de-escalation, however brief, is welcome, even if Trump is playing some weirdly ineffectual good-cop-bad cop routine.
This is the public bad cop. (The inside man is Bolton, of course.)