Jesse James' ex-wife, Janine Lindemulder, threatened to kill him in the past, according to what his lawyer just told the judge in their nasty custody battle.
Fighting for custody of daughter Sunny, James personally has been testifying on the stand this morning, but hasn't mentioned the allegation ... so far.
The motorcycle guru bought a house in Austin, Texas, and wants to take Sunny there so she can be closer to his most recent ex-wife, Sandra Bullock.
Ex-wife #2 is far from pleased about that proposed plan.
At least Jesse James and Sandra Bullock split amicably and quietly. He and his prior ex-wife are at each other's throats in court, and it's getting uglier every day.
Over nearly five years of marriage, Bullock developed a close relationship with Sunny and his two older kids before his cheating led to their divorce.
Lindemulder, who just got out of a halfway house and can't leave the state of California, filed documents trying to stop the planned move by James.
Janine says the Sandra Bullock excuse doesn't hold water because if she really cared about Jesse's children ... she would have stayed in California.
We'll see what a judge has to say about that, but we know James has alleged on many previous occasions that unstable Janine is a threat to Sunny.
A big enough threat to bar her from all contact? Stay tuned.