I accidentally put in my email wrong when setting up my Nintendo Network ID and now I have forgot my password. Seems to me that the only option is to delete my NNID. Will this delete my eShop games? Will I be able to re-download them?
Your eshop downloads will in fact be deleted.
There is no get around for this, really if you delete your eshop account all the downloads will come with it, but I agree with @Trent, it's still a viable option to go and ask the customer service what they can do about this particular situation. They may be able to resolve this issue!