Foundationless Frames And Wacky Comb Building

My foundationless hive Willow, has been doing a great job building out foundationless frames and is progressing along nicely since I installed it from a package on April 14th, 2012. A few weeks before this inspection on May 25th, 2012, I placed a second super on this hive. I was torn about whether to under or over super this hive. I heard from other beekeepers that over supering foundationless frames can lead to weird comb building, but this hive has a mix of wax foundation and foundationless frames so I decided to try placing the second brood box on top of the first and see what happened. This is what I discovered.
Looks okay so far, right? Well, in a center frame the bees had started building comb on the bottom of the frame as well as the top.
Another view of the comb on the bottom of the frame.
What’s the problem with that, you ask? Well you can clearly see in the picture below. The bees had built this comb in both directions making a curvy x shape and had attached it to the top of the frames on the bottom super and to the adjacent frames in the top super. Then they filled it with honey.
When I removed the frame from the super, I tore open the honey comb. I’m happy it was only honey in there and not brood. In the picture below you get a sense for the waviness of the comb they built.
I had to remove this curvy comb and rearrange the frames. I put two frames of partially drawn foundation in the middle of the box and pushed them together where the strange comb used to be. I hope this will discourage the girls from rebuilding it. If this does not work, or if I was using all foundationless frames, I would try moving this super to the bottom position.
In case you are wondering why I am wearing gloves (since I usually don’t), I had been stung several times on the hand earlier that day by Dandelion Hive and did not want to upset these bees with the alarm pheromone.