Yes, it was pretty bad. We cleaned yesterday night and this morning (with snow blower). But I bet its little better in VA (most went to DC/Baltimore area).
Reining girl, they ALWAYS buck like that when they run and play (whether in snow or not).
I'm not sure it's a norm in general or not, because I've never seen horses doing it so much and so intense. On other side they are just 6 yo, so may be just young still. And yes, my qh when she feels extremely good and energetic praises me with that nice buck(s) when I start trotting her in ring.