Huge Serp Drops Need Help

Hi guys Need help identifiying why my site dropped, The only changes i made was i back linked 17 inner pages using blogengine 600 back links between them with in 1 day backlinks on Scrapebox, and also i deleted some content from the home page, I was getting 20 visitors per day now im getting zero i was also ranked 114 th position for my search term now im ranked 308 th , Could this be a google dance that is going on ? i hope not i had bog plans for spending a few thousand dollars on quality links for this site to get it to the top, I'm thinking now only buy links once the site recovers its position i know this could take month's. I know a google dance can last month depending months like 4 month's or more depending on how many backlinks you have used. The only reason i backlinked the inner page was because i though google can not penalize my home page looks like i was wrong, I look forward to your comments guys thanks.

making a backlink in your inner page will get penalized by google. and looks like you made so much backlinks to your innerpage.

maybe you used scrapebox the wrong way. and google somehow detected you're cheating?