Joanna Cherry has accused some of her SNP colleagues of behaving like the "Salem witch trials" as the fall-out from her sacking continues to rock the party.
The Edinburgh MP lost her role as the Nationalists' spokeswoman for home affairs at Westminster on February 1 with some insiders claiming she was a disruptive influence.
Cherry, who has been a persistent critic of Nicola Sturgeon and is viewed as an ally of Alex Salmond, has now claimed the SNP is in "turmoil".
She had previously accused party bosses of "Stalinism" after she was only given 30 minutes' warning of her impending demotion at Westminster.
The QC has also had several public disagreements with party colleagues and activists over transgender issues. The Scottish Government is considering legal reforms which would make it easier for people to self-identify their gender, but the issue has divided party members.
"The reasons for my sacking were not made clear but I was not surprised," Cherry wrote in an article for the New Statesman.
"For some time a small but vocal cohort of my SNP colleagues has engaged in performative histrionics redolent of the Salem witch trials.
"The question – do you believe or have you ever believed that women are adult human females? – is one I must answer in the affirmative, but it’s not a response that is popular with some who have the ear of the leadership."
Cherry spoke out before Nicola Sturgeon is due to give evidence at the Alex Salmond Inquiry at Holyrood next week.
Salmond has accused his successor as SNP leader of breaking the ministerial code, a claim denied by the First Minister.
Cherry continued: "The turmoil in the SNP is unprecedented, but I’m comforted by the knowledge that the party is bigger than any individual, and we are strong enough to withstand this.
"Besides, support for independence has consistently been above 50 per cent in the past 20 polls and the independence movement is broader than the SNP. On 5 February a new grassroots, non-party organisation called Now Scotland launched with the aim of achieving independence as soon as possible. I am confident the cause will prevail."
Last week, an SNP spokesman said Cherry had been removed from her frontbench role because of "unacceptable behaviour, which did not meet the standards expected of a front bench spokesperson - not because of the views she holds."
