The WinRed precursor was an obvious conflict-of-interest scam:
https://www.buzzfeednews.com/article/jsvine/rnc-official-is-ceo-of-company-that-does-rnc-fundraising
Yes, the Real Clear Politics story covers Lansing's part. I am not sure that I understand the 'scam' charge; the money wasn't stolen - that I know of.