If the Bruins really want to be taken seriously, they will have to prove themselves to be a harder out away from the Garden. In their last home game until Feb. 26, the Bruins beat the Philadelphia Flyers, 6-3, on Thursday to sweep all nine home games in January and improve their home record to 21-8-1. Christian Dvorak picked off a Jonathan Aspirot pass in the neutral zone and the Flyers immediately went on the attack. First, Minten scored off the rush, benefiting from an Ersson softy when his wrister slipped under the goalie’s pads once again for the rookie’s 14th goal. Philly started to spend more time in the B’s zone while Ersson made a couple of good saves at the other end to keep the Flyers within striking distance.