(he does realize he's talking to someone who once led the Brotherhood of Evil Mutants, right?)
But anyways, I was looking back at Secret Wars, and I wonder if there's ever been point where Xavier regretted abusing his powers to prevent Spider-Man from telling the other heroes of the X-Men's plan to join Magneto? He says it's something that he will "long regret", but I honestly don't recall him even referencing this.
Has he ever said anything about this again?