Geezzz, he looks like the old man in Home Alone 1.
The Bible OK's spanking but not mutilation. (Proverbs 23 v 13 and Proverbs 29 v 15 & 17).
There was a time when the OT said to stone an adult (child) if he was beyond hope & out of control (Deuteronomy 21 v 18-21). Not practiced today, but it sure would make some people think twice.
Finally, discipline was never done sexually in the Bible. I know some warped minds will come up with some sick responses to that statement, but this man was clearly doing unbiblical things. Christian or not isn't for me to decide but his actions with his daughter weren't Christian ones. Remember David Koresh doing sexual things with "his" women? Didn't the fire get him?