In case you haven't understood that article, here's a brief explanation.
The microwave background was radiated when the universe became transparent 400,000 years after the big bang. The radiation had a temperature of 3000 K back then, but meanwhile cooled off to around 3 K.
The background radiation reaches us from all directions. However when a galaxy is in the way, it absorbs a small percentage of the radiation. Therefore there's a "shadow" in the background radiation at that position.
Because galaxies mostly consist of empty space, the shadow effect is too weak for direct observation. However when a galaxy moves perpendicular to us, the shadow "lags behind" the image of the galaxy. In this case it can theoretically be observed.
Unfortunately the radiation absorption by a galaxy is very small, like 0.0001 percent, while the background radiation can only be measured with much less precision - like 0.1 percent. Therefore the shadow is still unobservable, however with a lot of tricks and statistical methods some scientist groups have claimed to have observed those shadows in the past years using data from the COBE satellite.
The group mentioned in the article tried to measure the shadows of some galaxies with data from the WMAP satellite, which has a 3 times better precision than COBE. They didn't find shadows. So we have now observations from the COBE and from the WMAP groups that contradict each other.
Unfortunately science has no infallible pope. Thus further observations are necessary to find out which group was right. After 2007 we'll probably know the answer. The PLANCK satellite is then launched, which is 3 times more precise than WMAP.
Contradicting measurements are very common in science, and are always explained sooner or later. Thus I'm afraid the creationist hopes of abandonment of science will be once more disappointed
.