I'm sure your requests to Google for them to un-sandbox your site will go through. Especially since they won't admit there is a sandbox, nor do they typically care anymore about webmasters complaints. Not to mention, there is no law against linking to a site.
I think you took my post too serious, as I was merely playing the devil's advocate, and pointing out a potential serious situation. What could SEO turn into if it is found that inbound links can hurt your site?
Of course there will be debate as to whether inbound links can hurt a site. My belief, after seeing the factors that have triggered the sandbox and other penalties, reading through the Google patent, and analyzing posts/comments made by some of the leaders in the industry, is that inbound links can hurt you. That one of the triggers of sandboxing a site is the unnatural acquisition of links.
I don't believe in the technique, nor would I have the time or care to do so. But someone will, and we'll be seeing "Someone gave me 15,000 backlinks" posts as much as we see the "Someone is hijacking my rankings" someday. We've seen how well Google has handled those problems.