No matter how fat the stores are on the frames, the brood will be the 'normal' thickness.. It's very easy to make the mistake of not pushing the frames together during an inspection and over time you can finish up with fat combs. A shallow frame is usually used for sacrificial drone brood, so if the bees have built worker brood underneath just to annoy, it might be worth moving it to the side as Kitta suggests so that in spring there's a good chance that it will have no brood and can be removed.