Jamie Spears never laid a finger on Sam Lutfi's solar plex, despite Lutfi's testimony that Britney's daddy punched him in the chest and threatened to kill him -- so says Britney's ex-nanny Leah Frand.
Frand tells us Lutfi's claims are utter BS.
Frand says she should know, because she worked for Britney for 6 months in 2007 -- at the height of Brit's crazy period, around the time she was 5150'd and sent to UCLA Medical Center.
Check out what she says, and judge for yourself.
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