This part S2E5

Alfred: “we do not cross over into Dane land we do not cross over into Dane law in body or mind nor spirit”

Untrid: knows that aethelwold crossed over because he told uhtrid the story just before “Yes my lord”

Alfred: “my nephew was seen doing just that, do you know anything about it?”

Uhtrid: “no but he says he should be king and if I were you I would put him to death”

Alfred: “should the devil begin to whisper in his ear then I may have no choice”

Uhtrid knowing aethelwold supposedly was spoken to by a dead Dane risen from the dead qualifies as just that.

My question is, if uhtrid had been honest with Alfred could the whole aethelwold conflict been avoided?

Didn’t aethelwold say he crossed over and spoke to a dead Dane?