Yes, that might be the party position, but does not mean all party members agree.
I really think this is what will happen:
October 31st - no deal taken off table, delay announced
November Election - Labour-liberal colalition.
December - January - half hearted efforts to secure a good deal. Fail. Revoke.
February / March - riots, moaning, letters to the papers, headlines calling the government undemocratic.
April - oooh, it's almost Spring, better book my summer holiday to Spain, oh, and enjoy some Portuguese new potatoes this weekend.
May - what was Brexit?