The ICR argument seems to boil down to one fallacy,
"1.The reputed fusion site is located in a peri-centric region with suppressed recombination and should exhibit a reasonable degree of tandem telomere motif conservation. Instead, the region is highly degeneratea notable feature reported by a previous investigation."
Chromosome 2 Fusion 2 - creation.com
They are incredulous that the region could have accumulated that many mutations since the fusion. It is an argument from incredulity. Once this fallacy is thrown out many of the ICR arguments go away.