I'm gonna say mine won't come apart without effort, so no they don't come apart... Sorry. R-3PO pops apart just like Endor 3PO did of course, like Jayson pointed out, which is pretty nice, if not pointless. You can have damaged R-3PO I guess.
Be neat if these were "clearance" finds like the O66 sets were... I'd like a couple of the droids but at full price I gotta cut back. Good deal regardless but $8 basic figures is gonna hurt.