The "Spike Stent" version refers to the tracks mixed and mastered by the legendary engineer Mark "Spike" Stent
Stent was reportedly paid to mix 12 tracks, though he only completed about 9 or 10 by November 2016. Charli XCX XCX WORLD -Spike Stent- - This Act...
The term "This Act" likely refers to the "acts" or segments of the XCX Manifesto or the structured rollout plan devised by her team before the leaks occurred. The "Spike Stent" version refers to the tracks