It has already been referred for prosection  

Exactly. Trump knows that he's criminally vulnerable, doesn't want to have to defend against the charges (who does?) even though he knows he can tie them up for years.

Read the TrumpeRINO posts here, any indication of deviancy, criminality in political opponents is made headline news and repeated endlessly. Trump knows member of that pack could turn against him. His base is solid but small, any further diminishment further limits his power. The GoP is gradually putting space between them and Trump, that's why he has suggested forming his own party. That's putting the gun in his own mouth to pull the trigger, his 'party' would diminish conservative and Republican power. Trump before world, America, culture and morality. Remember when Republicans claimed to be defenders of all that against the Democrats?

Trump is a serial sexual attacker, a liar, a cheat, a thief and Anti-American, anti-election.

Wanna bet as to whether he will flee to somewhere without extradition or weak extradition laws?