Tact was taken by suprise as the parrot clawed, but it actually worked to his advantage, it meant he was not suprised by the others flooding in... He looked to the window, and prayed his plan would work.
slamming into the glass, or shooting the glass would not help, but the window was divided into two panes, seperated by a metal strut. He shot that strut, causing it to break, and threw himself at it, with luck the window should open like a gate, allowing him to fall to the street below...
Spiders were good at falling.