Whenever I read any of this extreme fundie stuff it makes me think that the people at the top of these movements have some kind of sick fetish for control and get off on the fact that they are leading hundreds of people to live in this way.
You can see it in some of the child "discipline" abuse guide books. It's not a simple "Beating is good because it instils fear and is an effective punishment" (though that would be bad enough) but it's "Carefully remove your child's clothing and place them in X exact position, and select X implement which is exactly 0.3 inches wide and hit X number of times with X force until X type of crying occurs."
Seriously creepy, overly detailed, and fetishistic. The wife stuff is the same. I don't think any Christian manuscripts suggest or condone beating your "disobedient" wife but there are several fetish sites which do, (as part of a consensual BDSM lifestyle kind of thing) and honestly, if you compare the two it's pretty fucking difficult to tell them apart, except that the BDSM stuff has a fairly comprehensive bit about actually consenting to sex and anything involving violence 