Based on the excerpts in the article it doesn't seem like he's denying much. Rather it seems more like he's trying to retroactively justify it/look for sympathy that I doubt he'll find.
> the imprisonment and degradation of his own daughter — is described thus: ‘At first it was just a mind game I played. But I got used to it. The idea, which had previously seemed so absurd, so monstrous to me, took shape.
> ‘One day I knew what I had to do. All that remained was to wait for the right opportunity. On that rainy Saturday morning the time had come. The thought had become action.’
> ‘It wasn’t easy, because the thoughts of what I had done were constantly circling within me,’ he says. ‘I was constantly energised. There was no one I could confide in. I had to look ahead and continue on the path I had chosen.’
> the imprisonment and degradation of his own daughter — is described thus: ‘At first it was just a mind game I played. But I got used to it. The idea, which had previously seemed so absurd, so monstrous to me, took shape.
> ‘One day I knew what I had to do. All that remained was to wait for the right opportunity. On that rainy Saturday morning the time had come. The thought had become action.’
> ‘It wasn’t easy, because the thoughts of what I had done were constantly circling within me,’ he says. ‘I was constantly energised. There was no one I could confide in. I had to look ahead and continue on the path I had chosen.’