I'm not on the discord either, but I'm nearly certain that the video in question is actually this one given how closely it matches Norm's thought process:
View: https://www.youtube.com/watch?v=49t-WWTx0RQ
My read is that Fred accidentally gave Norm a nudge he needed with his view on how a Nemesis cares for their opponent; prompting him to realize that since his recent memories could lead to His Father doing something dangerous and Perry's not around to reliably stop him from hurting himself any longer, Norm himself would have to step up this time. He needed to give his report, there's no way around that, but by quarantining off his recent memories and doing
something with the molasses gun, he was able to truthfully tell Doof his report without bringing up that dangerous information at all.