I find it unlikely Minato will be asking questions we can't answer, and if he does we can honestly say we don't know what happened. We blacked out, and our body apparently went on auto-pilot. That's 100% the truth.Why do people want to be questioned before we have time to ask Atlas what actually happened? We can't answer most of his questions. That pretty much guarantees that Minato finds us suspicious.
And if it isn't obvious, appearing suspicious right after everyone is paranoid because an enemy infiltrated the village is bad.
Or, alternatively, we tell the Hokage about Atlas. I think that'd be a good move.