You've seen mindspawn's output over on the ark thread. Not only does he not consider magnetic reversals a problem, he thinks that they help his case. He is convinced that reversals are part of the special magic that lets him cram 600 million years into 6 thousand years. He thinks that magnetic reversals are the actual mechanism for wibbly-wobbly timey-wimey distortions in radiometric dating.
Now that may seem crazy to you and it seems crazy to me, but it is actually quite revealing with regards to creationist thinking. It seems that there is no problem with the YEC hypothesis that creationists won't try and turn into a strength. The self-delusion is so strong in these people that any fact, even a contradictory one, will be woven into the fabric of their wacky delusions. Then, the fact that they can do this further strengthens their conviction that they are right.
It's the same kind of behaviour that we see when a new transitional fossil is found and the creo's start crowing about two more gaps appearing in the record. The truth is that mere facts are not what persuade people to believe. Most people decide based on their gut, wishful thinking and the authority of those they trust.