Oops - you're right. Must have an out of date copy of the API docs. :roll: Looking at the (up-to-date) docs I see you can get the page context by calling the getJspContext() method in SimpleTagSupport.
You showed up just in time for the waffles! And this tiny ad:
Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop