The answer is no. They already have 10 more wins than the worst team in Phillies history. The 1883 Phillies, in the very first year of the franchise, went 17-81 with a .173 winning percentage.
They can, however, become the second worst team in Phillies history...but it will take a lot of work.
I did a little math to determine what it would take for the 2015 Phillies to finish with the second-worst record. It is a good challenge for this team and at this point, I am almost hoping for it. Maybe that makes me a miserable person.