Are you sure that it's totally disabled? Look at the <LIMIT> statements in your httpd.conf file, this is where you set whether or not a location can accept GET or POST requests.
That truly sucks if you can only use GET. It's not more secure, but it's the only way to send largish amounts of data (like a file upload) to your script. . .
If you're only going to do vanilla stuff, it's pretty easy to recompile apache, though I have no idea how this works on OS X
-Any sufficiently advanced technology is
indistinguishable from doubletalk.