It could have happened and it just didn't make it into the story, but surely JP would have called Brad since it is his kids being fucked with in an attempt to get at him. Brad himself could be in danger.
And of course Will should have called him. Will gets pissed because Stef and Brad didn't tell him that Schluter-Caruthers was moving their office. This is a bit bigger than that.
There isn't a main character adult in the entire CAP series that Will hasn't been pissed at, hasn't been rude to, doesn't think he is smarter than, doesn't think he is more right than and has treated badly, despite all the things they have done for him.
Will manages to bring the characters together because they are all reading the script in front of them, not because Will is the magical Golden Child.