On 12 Dec 2008, Erik wrote in alt.home.repair:

By chance if you should go the cutting torch route... you need to
be absolutely positive the post doesn't contain any water. You
don't want molten metal splattered all over you, bystanders, pets
or your property.

Good point, that doesn't sound like much fun. I'm thinking the $20
angle grinder method will be the cheapest solution and reasonably easy.
I expect a torch would cost more, and I don't know what else I'd ever
do with it.

Good Luck!

Thanks!