In Mark Ravenhill's The Cane, there is a line which I think it's a slang, but I can't find any references on the net. Please help me:
Maureen: Which is why I’ve invited the Head here today. I want his assurance that the staff will lend their full support to protect everyone attending the farewell and to prevent any disruption or physical attack.
Anna: If he just apologizes.
Maureen: If you leave now
Anna: I understand how to put together a form of words
Maureen: Go before the numbers build.
Anna: that will operate as an apology without recognizing any legal...
What are their means? Especially Maureen's line.