Unfortunately, the ability to have columns within columns isn’t possible at this point in time. What you could do is create two rows, one that is a single column, one that is two column, space them close together and then add your modules. I could see that working just fine in the example you provided. Let me know how it goes!
As Billy said, you can create that layout quite easily with a single column sitting on top of a double column in the main section of your page. The content in column 2 could be added by setting your page template to “With Sidebar” then creating a widget and adding it to the sidebar.