Glad to hear it was working well before your little mishap though. Was it just the way that you had the blade? I assume it wasn't really the fault of your Pioneer. No offense, but this seems like driver error.
My area got a little over 15 inches of heavy wet snow. I was on my second round of plowing and had a medium sized pile. I was hitting the pile in the middle and got a little to far into the pile. The plow was up that high so I could pull it off the pile. The Pioneer pushed huge piles of heavy snow all day without any issue, but like any vehicle it can't overcome being hung up and icy ground. If the ground didnt have a small ice layer I'm sure I could have backed up.