A USB-to-2.5" drive cable costs almost nothing. Buy the cable, pull the drive out, if it spins up (which it probably will, water usually doesn't get through the breather hole) grab the data you want then wipe the disk.
If it doesn't spin up, wash the drive vigorously in distilled water and let it dry for a couple of days. Try again.
If you simply need to destroy the drive, simply drag something sharp across the PCB.
But I think most on the ball companies will understand your desire to destroy the data. You could simply ask the co to let you keep the drive.