Take the panel off the front of the bellhousing. I once had a TJ clutch that completely came apart. I pulled the flywheel cover off the bellhousing and the shavings from the clutch were in the bottom. When it happened to me I couldn't even get the get the gears to disengage it was a mess.
Anyway other than cleanup, it was a normal clutch replacement, and like yours it happened kinda suddenly. I was freaking out it might be a tranny issue or something crazy. I would check both the master and slave cyl as well, but it sounds to me like your clutch plate literally blew up.