Powell argued that Flynn should withdraw his guilty plea. “Extraordinary manipulation by power people led to the creation of Robert Mueller’s continuing investigation and prosecution of General Michael Flynn,” the former federal prosecutor wrote. But with the “recent postponement of General Flynn’s sentencing” and “the opportunity for more evidence to be revealed,” Powell argued that Flynn would have “massive ammunition for a motion to withdraw [his] guilty plea and dismiss the charges against him.”
https://thefederalist.com/2019/06/12/breaking-michael-flynn-drops-lawyers-favor-special-counsel-critic/