Essentially....no!
My understanding of their policy is that EBMM will give your guitar a new neck if the old one is damaged, but it will be the same type as the existing one
EBMMs copyright on their headstock shape will also prevent you ordering one from Warmoth.
As the owner of a SS with rosewood neck I say keep it......the unfinished EBMM maple neck tends to show the dirt a lot more in my experience......but others swear by them.
If you really must have a maple neck SS, might I suggest EBay?