Open wheeling diffs will spin the other side wheel the other way when car is jacked up.....clutch pack type(plate) Lsd's will do the same just a little bit until the lsd unit kicks in(which is like 1/10th of a turn- not much) if the plates are not working properly like in RSX84's case, it will operate exactly like an open wheeler. because the slip is not limited.....this is assuming that his is a clutch type Lsd.
If it is viscous, then im unsure how it works but my understanding is the the oil in the viscous unit is forced thru little valves in the unit thereby causing both wheels to turn because the oil does not freely flow.......so i dont know how it would act in a jacked up situation because you wont be able to exert enough force by hand to make it work correctly.....
I know what I meant but I dont know if I have made it clear...