It should work with floppy, and problem is most likely because they did not patch properly that part of code - highscore save.
There is certainly no hardcoded C, because it should work from any partition.
Please try this: http://atari.8bitchip.info/SCRSH/returntg.html
I'm not 100% sure that on TT it will work from floppy (don't have TT at moment) . Highscore is not saved, but will continue normally. With Haga statesaves is possible to save scores too, of course - that's not really for floppy, needs 500 KB free space for. There are some special trainer options too.
Famous Schrodinger's cat hypothetical experiment says that cat is dead or alive until we open box and see condition of poor animal, which deserved better logic. Cat is always in some certain state - regardless from is observer able or not to see what the state is.