New Product Site Ranked Well in Google now Disappeared! Help/Advise please!

It looks to me like it's still indexed.

1. No immediate issues jump out at me.

2. People I recommend you work with? Yes, actually. There was a WSO of The Day about this not too long ago. I didn't get (nor am I an affiliate of it), but it looks good for your situation: http://www.warriorforum.com/warrior-...right-now.html

3. I've never tried using mass backlinking strategies, but that could have been the problem, yes.

Sorry to hear about the dropped rankings. I hope this helps!

There are only a couple of on page seo issues that I can see.

#1 - if your domain name is your main keyword there are a couple of things you can do to improve the on page seo on your end.



As you can see you are missing your main keyword in:

• <h1> tag
• <b> tag
• <u> tag

Your keyword density is really low - you want to shoot for around 3% at a minimum.

Also you have a lot of text in images - google can't read that text so you lose out on and keyword use there.

Of course on page seo isn't the be all end all but you should do all you can in your fight to get your rank back.

Seo is not instant and You cant gain it in 1 day, that's first and basic thing of SEO.

All mouth watering SEO Offers like 10000 Profile links for $20, 100K Blog Comments for just $200 surely do automation as its not possible to do it manually for the rates.
You mentioned SeNukex and I doubt that may be the reason for it.

Google penalize sites working for fast backlinks and whenever they find unnatural SEO efforts.

I would advice you to do few things first which i noticed:
Your meta title is too long, make it bit short.
Too many keywords in Meta Keywords,
( This is surely not the reason for your SERP position but it will be helpful for your site. )
About Off Page:
Don't go for anything automated
Buy Blog Posts on niche sites ( quality sites )
Guest Posts provide really good backlinks
Build Squidoo Lens, Hub Pages for your site.
Do little bit Article Marketing but not with copied articles.

Try posting Blog Comments on good sites, or buy some commenting service which provide Comments on Low OBL sites, may be their own network sites hosted on different IPs.

Very Imp. is Don't go for automatic/spam links, it will surely harm you.

Hope my 2 cents will help you little bit.