Sounds like sidecutters time!
A right pain in the rectum, not nice to deal with.
I've snipped a few hooks over the years, the 28lb 2tone from Nazeing was hooked hard, and it was safer to snip the hook, but that is the only big fish I can remember. That was on a curved longshank pattern as well.
I seem to recall snipping a few Patridge Piggybacks.