Both theories are just that, however - theories. NASA doesn't know any better than the Hungarians what these changing forms on the Martian surface really are. The only way to find out for certain is to direct one of our upcoming Martian rovers to the area and photograph them. It seems it would certainly be worth the effort to find out conclusively.
And while they're at it, perhaps they could send another probe to examine some perplexing Martian features that look as though they were built by intelligent creatures. See those on the following pages.