Its been on the web several years.
http://www.snopes.com/photos/animals/txsnake.asp
The validity is up in the air as far as where...how big, etc....
The biggest DB on record was just over 8'.
Ive personally seen one 7.5 face to face down here...24 rattles and a button. (A guy killed it in front of me on the side of the road. His head was as wide as a soft ball.
Im somehow doubting this one was near what they say. I think the guy was a midget. LOL
Even going by the alleged length of "9.1" it wouldnt weigh that much. I have bros with 12'-14' reticulated pythons (way bigger body wise than a DB that dont weigh that much. A 90# snake is going to be 16+.