Just thinking out loud here.
What if part of the plan is we WANT Flynn sentenced to prison? What if that is Q's reference to Done in 30. 30 days. But, with his 30 days comes full public disclosure. That is why they want him to withdraw his plea. That is why they keep delaying because the whole situation, legally, has them painted in a corner. Their only hope is for Flynn to withdraw his plea so it can all be dismissed and just go away?
Just a few thoughts. I don't know what they are looking at legally that would make this true.