Well there are a couple of hog stories over on snopes. The first link below is for the Georgia version called Hogzilla and it is of undetermined status according to snopes.
http://www.snopes.com/photos/animals/hogzilla.asp
The second link is of the Florida version and it has the pictures linked in the original post.
http://www.snopes.com/photos/animals/bighog.asp
While impact maybe should know Bob Lancaster's name, it isn't relevant to anything here since the hog was not taken Texas and the guy who took it isn't named Lancaster.