It seems to me (though, I'll admit my ignorance openly) that the marketing of the property with wholesaling is exactly what Realtors can do that us unlicensed folk cannot. Albeit, you need to be clear that you're doing it not as the seller's realtor but as an investor/wholesaler.
The thing that I found most interesting in the video is that they clearly talk about the distinction between marketing the property and marketing the contract and even go so far as to say that putting out and ad (on Craigslist, for instance) IS legal and that describing the property that is under contract is also allowed. The biggest matter that would catch the wholesalers is if they are, in reality, NOT able or willing to close when the time comes. I agree with those points wholeheartedly as all this nonsense I hear about people tying up properties indefinitely (so no one else who really can act on it can get it) is in my opinion a huge detriment to real-estate investing.
Edit: video timestamp 7:03 (thereabouts) is where the contract part begins.