Looks like all that seething behind the wheel as you slowly navigate Cardiff's northern suburbs has addled your memory.
Johnson, or Boris as you affectionately call him, was not defenestrated by his own party because of Partygate. It was a contributory factor in the decline of support within the Tory party but ne survived a vote of confidence despite this.
He was unceremoniously shoved out of office because he knowingly appointed a well known sex pest as his Whip and lied about whether he had prior knowledge before his appointment.
This was enough for 60 Secretaries of State, Ministers and PPS to either verbally or in writing resign, including the current and previous leaders of the Conservative Party.
He was hung drawn and quartered by his own party. Your sausage roll schtick might give you some personal sustinence but to most others it looks like you haven't left the denial phase of the grieving process for your gone and long forgotten "hero".