Admiral Armada

I am at the point, doing LS missions, where I have to go and kill the Slusk. I got to the point where the gammorian opens the door (after killing all the mercinaries). Anyway, a droid (1) came out and then the door closed, forever selaing me out. I have since saved (oops), and was wondering if i could open this door or somehow get around it. Thank you