Seems unlikely, since he would've recognized Obi-Wan with how fixated he was on him. My guess would be that sometime during the fight he got away from Obi-Wan and Siri after being badly wounded, and it was someone else - someone Maul was at least somewhat familiar with, but didn't consider an enemy - who stumbled over and killed him. The likeliest possibilities I can think of would be Ciaran (though I don't recall whether she and Maul ever actually met), or Asajj (she and Maul definitely conversed, but IIRC not a lot, and I don't recall her being mentioned in the arc).