Winchmeister,
that reminds me of a plug a local guy here had, He fishes the canal. Split a gibbs polaris similarly to how yours is split, we figured that was it for that plug.
next day he comes back, fishing the same plug with 2 screws in it to hold it together! Therefore, my vote is that you screw it back together, and keep fishing it!
speaking of viscous fish, I had a bluefish last season on the tailhook of a pencil, pulled so hard the nose grommet was cracked and pulled back into the plug about 1/2 an inch!