Simplify the following text for a Grade 9 native English-speaking person.
Original: Undertaker was caught unawares by Kane , who lifted him into a tombstone piledriver position , but Kane managed to weigh himself backwards onto his own feet and deliver the tombstone himself .
Simplified: Undertaker tried to give Kane the Tombstone Piledriver , but Kane managed to weigh himself backwards onto his own feet and deliver the tombstone himself .