Use openscad to design an adaptor that let's you attach that endstop where you need it - that's the reprap way. Don't like something about your printer - print a new part.
You can easily fool the printer into thinking the end stop is reached by manually closing it during homing. This will at least allow you to print some simple objects because the end stop is only referenced when homing.
Alternatively, you can jury-rig the end stop into proper position using tape, wire, glue, whatever, until you can print a redesigned part.
