I don't believe SFZ3 was an accidental release.
Raz's goal is to dump all games, and all regions. And he has a rule, similiar to MAME, to not decrypt/dump games which have been selling for less than a year.
He's had Eco Fighters (great game) for a while now, but he has been holding onto it until someone donates, or he locates a japanese board, because if he releases the world version, no one will be interested in donating the Japanese, so his goal won't be realized.
He's not here to release games to appease the public with their favorite game, he's out to decrypt all known CPS-2 games, including their region clones, for preservation purposes, because as you all should know, CPS-2 boards actually commit suicide after a period of time, rendering the board useless, and lost forever.