TV: Lost - Helpful Radzinsky Reminder

In the episode "Namaste" we are introduced to a character we've only heard of before: Radzinsky.  In case you've forgotten, here's a some background on Radzinsky...

Radzinsky lived in the Hatch (aka "The Swan") with Kelvin Inman and did the duties of pressing the button every 108 minutes.   While working at the Swan, Kevin and Radzinsky created a map of the Island on the back of the "blast-door" that would come down during "lockdown" incidents.  Kevin and Radzinsky learned to fake these incidents so that they could work on the map.  Kevin says that Radzinsky had a photographic memory that aided in keeping an accurate representation of the Island on the door. 

Radzinsky also edited the Swan Orientation film, for unknown reasons.  What information did he leave out and why?

Kevin and Radzinsky were the only members of the DHARMA Initiative who were not killed in the Purge (of those who did not defect to the Hostiles).  

Kevin says that Radzinksy killed himself with a shotgun, leaving a blood-stain on the ceiling of the Hatch.