Since Patch 1.0, the infamous sniper weapon bug had returned from its days in Open Beta. Where you are stuck in firing postion, while the targeting laser is emitting from your gun.
You are stuck until you either 1) Beam Out or 2) Log Out and Log back in. And this is really inconvient during the STFs, where at times your group is forced to up progress (for instance, Infected Part 3).
So Cryptic, Please fix this bug as soon as you can.