I think the neck's separate for greater range of motion more than anything... Kenobi's old and a little stooped over in many scenes. It's possible to avoid the floppy neck if you either cut the bands holding the figure in (carefully with fine point scissors), or to remove the table first and other areas the band is wrapped around the figure, and remove it around the neck last...
I got another tonight and see how it's stretching it out in the packaging, but mostly it occurs trying to remove the figure from the package. I'd suggest the first route of simply cutting the band, rather than "ripping the figure free" from his package. Just some advice from me for what it's worth. Mine came out fine tonight with out needing neck viagara.