RLMResults sortedArrayUsingComparator behavior

Question

I've got a one to many property that returns a RLMResults for an objectsWhere: query. I need to sort this data by linking up uid's in a linked list fashion (each object has a previousId property which points to the uid property of the object before it).

I can do this with an NSArray with sortedArrayUsingComparator like this:

myArray = [myArray sortedArrayUsingComparator:^NSComparisonResult(MyRLMObject *obj1, MyRLMObject *obj2) {
    if ([obj1.parentTileId isEmpty]) { // head of the list must be sorted first
        return NSOrderedDescending;
    } else if ([obj1.previousId isEqualToString:obj2.uid]) {
        return NSOrderedDescending;
    } else {
        return NSOrderedAscending;
    }
}];

However, RLMResults only has sorting based on 1 property. Is there a way to get the same logic with RLMResults? As a fallback solution how can I convert RLMResults into NSArray to perform this?