Even now with kidnapped pigs no longer being accepted at altars or vendors, pigs disappear at an alarming rate off of the main streets.
I placed four pigs in a small 'island' in Marrakesh with grain, and a note to leave grain for them.
All four were gone within three hours.
So, the options are: a) Hog-tied pigs will no longer be accepted at auction,
or b) removal or greater limitation on the ability, since kidnapping + selling seems to be the norm lately with pigs.