Kaplan was under indictment for heroin dealing, that is what made him testify. He received a deal in exchange for his testimony.
Jace, your probably right as your version sounds more realistic.
"Mobsters" discussed Burt Kaplan. There was a Detective Joe Ponzi, who gave a heroic account on how he flipped Kaplan. It doesn't make sense that Kaplan would flip based on botched murder from a mistaken identity. He was a close associate of Gaspipe, so I'm sure he has seen much worse than Nicky Guido.
Go to the 6 minute mark to hear Joe Ponzi's self serving version on how Burt Kaplan was flipped.
You shit-kicking, stinky, horse-manure-smelling motherfucker you! If you ever get out of line over there again, I'll smash your fucking head so hard you won't be able to get that cowboy hat on. You hear me? Fucking hick. -Nicky (Casino)
