I think we have that somewhere in the repair links below.
If all the stuff above the lower Turbo Drain tube is removed I believe I read that some onw use something like a punch or wooden Dowel the aproxomate size and knocked it up from the bottom with the Lower Oil Pan off.
You might also be able to cut the rubber lip off of the seal and that might help you pull the tube; again the Lower Oil Pan I think would need to be off.
Repair Links
http://www.peachparts.com/shopforum/diy-links-parts-category/
http://www.peachparts.com/Wikka/DoItYourSelf