Not without serious cost. It's an event search that uses PHP to XSLT an XML feed from another server. It can be pretty time-consuming. The lists can get very long, and it can take ten seconds or more to finish a request.
I need to commit to a path before sending the request to the other server. The AJAX path renders the page, then fills in the list after being fetched. The non-AJAX path delays rendering the page until it gets the rendered XSLT, so that means I can't redesign the delivery without incurring serious usability costs to the 90% of users that have AJAX-aware browsers.
That's why I want to make sure the proper path is executed.