That's Kathy's Plot Untwist for INPY,
Pronounce Away. 
Okay, another new one...
The last piece of the Nightfall Asteroid fell majestically through the atmosphere. The surface was molten, incandescent with the heat of its passage, and the turbulence it created around it was awesome in its power and fury. Jonathan and Martha's plane, circling in a holding pattern above Metropolis Airport, was tossed aside like a child's toy; the passengers barely had time to scream in terror before it hit the ground and exploded.
The very centre of the meteorite smashed into Clark's apartment building. Two of the intertwined bodies in number 344 were pulverised instantly; the third, although indestructible, was driven deep into the earth by the force of the impact. Mercifully, Superman's memory was once again erased by the collision, and as he wandered the corridors of Lex's bunker over the next few days, he had no inkling of the terrible loss he had sustained. Locked away from the life-giving rays of Earth's yellow sun, his powers waned and died without his ever recalling that he had them; his own death followed shortly thereafter.
*****
Lex himself happened to be hunting in the Everglades when the asteroid hit Metropolis. His reprieve was short-lived, however: he was bitten by an alligator the next day, and both parties died an agonising death from the bite. But Nigel had invited Jimmy along for the trip, and the two of them lived happily ever after.
Wendy
