The war began when one half of the X Factor duo, who were still in their munchkin costumes from this week's Wizard Of Oz task, attacked the model as he relaxed in the house garden.
Sabel gave chase to the 'Lipstick' singer in his Dorothy dress and launched himself onto the grass in an attempt to tackle him.
After failing to catch his attacker, Sabel turned his attention to the stationary Grimes brother, overpowering him and forcing shaving cream into his face.
The shocking act saw the tables turned, as Jedward furiously raced after Sabel shouting "kill him". However, the Irish pop pair eventually apologised for their actions.
Housemates discovered the results of their Wizard Of Oz-themed shopping challenge earlier tonight.
Watch a video of Bobby Sabel and Jedward's shaving foam fight below: