cantoresq:
Perhaps I can help you out.
1. There is a guy named Nachman Seltzer who writes for the Hamodia newspaper. You can contact him through Hamodia. He is the guy who publicized this story. The subtitles in his stories are “a true story by nachman seltzer”. I am a bit familiar with the world of newspapers, and can tell you that they will forward your question to him. Ask him for the details and where you can find poof.
2. There is an organization called “torah communications network”. They have thousands of shiurim on every topic. There is a shiur by Rabbi Moshe tuvia Leif (under the title purim) that discusses your excellent question, namely, how can we “erase” or forget Amalek by remembering him every year! If we were not commanded to read about him etc, he would long have been forgotten. Though there is an 8 dollar charge per month for the service, some of the timely shiurim are for free. You may be able to hear that shiur Purim time for no charge. Or it may be worth your while to become a memebr (as I am). There is a wealth of info there.
(There is another similar service that is absolutely free called kol halashon, but its not as sophisticated)
(In addition, i am sure there are lots of other sources that discusses your question. I would give you the answer myself, but I want to give you the satisfaction of learning up the answer…:) )