My conspiracy theory.

[newdayneeded]

I bet the SC had this Roe decision in their back pocket days after their super majority. They waited for a future repub disaster. And here it is, the repubs know/knew this committee would find hard evidence about Trump and his cronies tying him to J6. Once that became evident, the phone call was made to leak the memo/overturn Roe. It's the repubs way of changing the subject, and now it had to be used.