Will they charge McCabe for "lack of candor"? Doubtful. Will McCabe successfully sue to get his pension? Probably.
From the DOJ's own Office of the Inspector General, composed of career officers:
Lying under oath three times doesn't usually lead to the slap on the wrist you are imagining.A Report of Investigation of Certain Allegations Relating to Former FBI Deputy Director Andrew McCabe
https://oig.justice.gov/reports/2018/o20180413.pdf
The Offense Codes Applicable to the FBI’s Internal Disciplinary Process punish FBI employees for “lack of candor.” Offense Code 2.5 (Lack of Candor – No
Oath) prohibits “[k]nowingly providing false information when making a verbal or written statement, not under oath, to a supervisor, another Bureau employee in an authoritative position, or another governmental agency, when the employee is questioned about his conduct or the conduct of another person.” Offense Code 2.6 (Lack of Candor – Under Oath) prohibits “[k]nowingly providing false information in a verbal or written statement
made under oath.” Under both offense codes, lack of candor is defined to include “false statements, misrepresentations, the failure to be
fully forthright, or the concealment or omission of a material fact/information.” (p.3)
We concluded that McCabe lacked candor on four separate occasions in connection with the disclosure to the WSJ. Three of those occasions involved his
testimony under oath.
Lack of Candor with then-Director Comey on or about October 31, 2016 (p.22)
Lack of Candor in Interview Under Oath with INSD Agents on May 9, 2017 (p.27)
Lack of Candor in Interview Under Oath with OIG Investigators on July 28, 2017 (p.29)
Lack of Candor in Interview Under Oath with OIG Investigators on November 29, 2017 (p.31)
The OIG also concluded that McCabe’s disclosure of the existence of an ongoing investigation in the manner described in this report violated the FBI’s and the Department’s media policy and constituted misconduct. The OIG is issuing this report to the FBI for such action that it deems to be appropriate. P.35)
