To be honest, I think it's directly related to the fact that guys who stay in ice dance/pairs/figure skating in general, are treated like they are the more important half of a duo, simply because there are less guys in the pool. They can afford to be more callous with a split because no matter what, 5 other people are scrambling to partner with them. It's a sad truth, but the guy in a partnership is just valued more.
Now, it will be interesting to hear if the WISA coaching staff was involved in this because if they were, they are really putting their reputation on the line. They were starting to emerge as one of the big coaching camps, but now they are down two of their star teams and not under great circumstances.