Exactly...did the engine over rev, did the belt snap, etcThis sounds to me like possibly a skipped timing belt and possibly some bent valves or just out of time. The valves didn't "burn" suddenly like that.
One side note..."Power Platinum" plugs do not belong in this vehicle. This vehicle needs irridium plugs.
Can someone confirm that for 2006, the cylinder numbers are:Forgot about #4 not being a VCM cylinder that year. Thought #6 might have just been a result of everything going bad. Timing could definitely be an issue and needs checking. Compression in all cylinders should be done.