Sorry there's no picture for this post; the only photos that come up in SB Nation's widget when you search for these players' names are shots of hitters homering off them.
Bautista and Bootcheck are no surprise. The big news here is the removal of Hansen, who was one of four players acquired in the Jason Bay deal. Hansen has a nerve disorder that could take years to heal, which is bad enough, but there's also the fact that he was hardly a reliably great pitcher even before that was diagnosed. Perhaps he'll wind up back in the Pirates' minor league system, but they were probably wise to take him off the roster.
These moves should allow the Pirates to move Jose Ascanio and Evan Meek from the 60-day DL back to the 40-man roster. (Hansen was already on the 60-day DL and was not occupying a roster spot; the same is true for Tyler Yates, though I can't imagine he'll be protected.)