The star is above the spikes, at least in the current version. Which also makes it *seem* impossible to get if you enter the room with 2 Steves (although I could be wrong). Was it changed at some point? I don't know if any older versions of the game are still available online anywhere to check, or if there's any footage of the room from an older version that might show it as being on the spike?
I probably just misremembered the positions of things when describing it. Looking back at the original comment I was responding to, Marie75020 was one step short of being able to leave the room, not one step short of the exit space, so I clearly just had a brain-fart when answering that one, and mentally put the star one space back from where I thought Marie was (obviously I didn't have the star there anymore myself to check it). Mea culpa. I'll update that comment so it doesn't confuse people ;)