Short Sale Thumbscrews

I am working on a short sale and received the bank's addendum to the contract.  This addendum comes via Wells Fargo (click to enlarge):

I thought the highlighted portions were interesting since they will negatively affect many investor's short sale businesses.  Of course appraisal fraud and straw buyers are a no-brainer bad idea regardless of the situation, but what is "flipping" in Wells Fargo's mind?  They don't clarify.  Fannie Mae has been putting 90 day resale restrictions on its bank-owned sales in order to curb "flippers".   However, I don't see any wording or indication that this is the case on this addendum.  Perhaps we are just supposed to guess at its meaning and its implications?