Where on earth does this author state Jesus is a sinner? Paul states that Christ did become sin for us:
2Co_5:21 For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.
It is this sin that is shame before God. It is our shame that Christ bore.
The third paragraph of the article is a false gospel. It is not the Gospel Paul preached. It is closer to spiritual pornography.
Those who come to Christ through faith in Him, rejoice in the work of the Cross.