I'm gonna chuck him, but not when there are Triffids nearby, and I'm going to give him supplies and some chances.

If the Triffids are in the area, then he will most definitely be just locked in the cupboard.

On the other hand, I don't see this as a very good parallel for our modern society, where we have many more options thanbnks to a large constabulary and judiciary to deal with such reprobates.

And should Triffids attack I'm off to the island for my multiple wives!