we have had many kids that have moved past the point of tantrum and into histeria... youre unable to discipline at this point because they dont even know anymore why they are falling apart. I vote for comfort. Just work to getting them calm. Two great methods for me are 'time in' and also a nice warm shower, put them in it, even if they are sobbing and calmly talk about how they are going to calm down and feel the nice water etc... we talk the whole time they are in the shower about whats happening next, that they can pick the powder they want and the clothes to wear, they calm so quickly its astonishing, then once dressed, 'time in' again. Hold them close, at this point, we usually talk about what was going on, but half the time they fall asleep and have no clue why it even started. I like to think the lasting memory from it though was that they were supported and cared for and calmed, and maybe next time, they will trust me to share their feelings verbally rather than through a tantrum.
Sorry for the novel!! Would love to meet your little cuties one day!