One more thought just cross my mind, if you are in a good working relationship with your HR or superior and they know's that you have applied under SNIP program, let them send an email directly to you as and appreciation of your work and let them directly write in that email to SNIP that they will be very glad if SNIP can help to process your application and he can provide his/her direct contact details.. and you can provide that email as a recent proof to them just to convince that you are really working for that company.Yes. They are asking for work emails and samples of work.
just a thought...