Stars lost seven wickets for 19 runs in one of the most bizarre collapses.
Boyce was unaware of getting close to the stumps after shuffling.
The Stars lost seven wickets for 19 runs during their run-chase.
The stage is set for the big-final where a Melbourne derby will pick a new first-time winner of the BBL.
The Stars have made one change to their squad.
Stars have won on both the occasions this season.
Sixers not upping the ante in the last few overs hurt them in the end.
Mohammad Nabi is not available for the Renegades.
Vaughan also praised Maxwell for his match-winning knock of 43 not out against the Hurricanes.
Worrall bowled a match-winning spell of 4/23 to take the Stars into the final.