The love part out of a spanking is that you love that child enough to show them the seriousness of the situation thru punishment. That is the way I see it anyway. Spankings should not be given out just any ole time the act up. But I think there is a time and a place for it. It is not meant as a form of humiliation no more than " time out " is. I mean if they are humiliated by it then good. They shouldn't have performed whatever act that caused them to get spanked or punished.
Ephesians 6:13

Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground, and after you have done everything, to stand.

Ephesians 5:25

Husbands, love your wives, just as Christ loved the church and gave himself up for her