Why on earth are people getting so emotional over this. Corporal punishment was CLEARLY allowed and practiced in Catholic countries and, as has been pointed out, was even talked about by theologians who did not condemn it. Of course it should only be used when necessary; I don't think anyone here is advocating for widespread spousal abuse.  
That being said, some women need it. I am a woman, I've never been beaten...but I probably deserved it a time or two. :-[
What if a woman is about to commit a mortal sin? Would it not be better to give her a good flogging (within a TRUSTING marriage....not with some psychotic wife who is going to go to law enforcement afterwards) than to see her fall so far from grace, potentially ruining her chance of salvation? I genuinely think it's a quicker way of resolving conflict than bottling things up and turning passive aggressive toward your spouse. It's like when I spank my toddler....matter-of-factly...quick...she apologizes, I forgive her, we move on.

So you're saying that the licitness of wife-beating is simply a disciplinary matter, then, and not a moral teaching.  Uh, no, the Church did not "teach" different things about the age to receive Communion.  You're mixing terms now and being disingenuous.  Church established various disciplines regarding the age for Holy Communion.

But if it's subject to change, then it could be wrong, and I am entitled to question it, right?

So you're trying to have your cake and eat it too.  You claim on the one hand that this is Church "teaching" and then on the other hand suggest that it's changeable like a Church discipline.

I have been called a man on this forum before (before i was banned). I am a woman, albeit an apparently masculine woman, but a woman all the same. I have birthed two children so far, but oh well...I'm not going to try to convince either of you. :-X

I was called a man for espousing this view too.  It seems to be a standard practice.  I am just grateful that you are using a name rather than being yet another anonymous poster contributing to the discussion.  It is so confusing.
Of course, even when we are trying to use names, it is easy to omit them.  

Bishop Williamson of The Resistance would reprimand Jaynek as a feminist for attending University.

Corporal punishment of a wife by her husband is licit in principle and always will be because it logically follows from an unchanging doctrine.  It is the nature of authority that it may be enforced.
When I wrote  
  I was trying to say that one may make a case that it does not apply in practice.  I was not sufficiently clear.