Does a prosecutor's threat to prosecute a defendant if he withdraws from his guilty plea invalidate the knowing, voluntary and intelligent clause under Rule 11?

QUESTION(S) PRESENTED 1. Does a prosecutor's threat to prosecute d deféndantfifi: he withdraws from his guilty plea invalidate the knowingi: voluntary and intelligent clause under Rule 11? 2. Does defendant's Counsel fall within the Strickland v. Washington and Hill v. Lockhart standards when counsel receives threat to prosecute defendant's family members from prosecutor off the record at sentencing and does not inform the Court of the threat and advises defendant to stay in plea when granted oral argument to withdraw plea at sentencing and advises family members at Court to urge -defendant to'stay in plea or receive a & ; me > : ae :