Remember that scene in Jerry Maguire after Bob Sugar (Jay Mohr) fires Jerry (Tom Cruise) at lunch, and then they both run back to the office to beef up their client list — Sugar calling to dissuade his clients from signing with Maguire, and Maguire trying to persuade his clients to come with him, etc.? This is pretty much what’s been happening since PMK/HBH’s Pat Kingsley fired 23 year veteran Leslee Dart on Wednesday. The reason Kingsley acted so decisively and at such an inopportune time (i.e., right in the middle of Oscar season), I’m told, was because Dart had been talking to several clients about coming with her to a new p.r. company she intends to start up, possibly in partneship with former Miramax publicist Marci Granata but not, despite the rumors, with currently-employed Miramax publicist Amanda Lundberg, who says she’s flattered by the rumor but is pregnant (due next April) and under contract with Miramax until August ’05.