Roll for fun? Doubt it. The oil on the canopy is a key sign.
i think this is where i would be looking into, Oil on the canopy can happen with a minor/intermediate oil leak, such as a filler cap left off, or broken gasket,
But oil all over the right hand side of the aircraft, right to the tail and empennage, that to me, indicates a major failure somewhere, and possible damage to the airframe from high speed engine components flying all directions..
but then again, a bit of oil can go a long way....