Flipping Rule

[KJS]

Ok, I need some help explaining the flipping rules to my team. We were flipped over in Utah in the quarter finals while playing defense. There was no call and as hard as was being upside down I think it was a good call because I didn’t think it was intentional. Then we went Colorado. In the quarters we were being defended and flipped over a tall, tippy, narrow robot while they had us pinned on the defenses (I had the drivers view and it is a different perspective when seen from the side).
https://youtu.be/w34O_lqwKFk?t=1m21s
Again the tip was not intentional however we were yellow carded but won the match. After the match one of the team members went to the question box and was told by the head ref that this was a warning and that in the same situation he would not give another yellow card. In the next match the same robot got in a pushing match with another of our team mates and ended up running over them and tipping to the side.
https://youtu.be/HWX2U5jih0U?t=1m36s
Our team mates were yellow carded. We won the match but the two yellow cards equaled a red card and we were DQ’ed. It crushed the kids. A few matches later 1619 gets hit from the side by 3288 playing aggressive defence and they are knocked over.
https://youtu.be/lyw0_XmMduA?t=1m5s
No yellow card. What do you tell the team? Seems pretty inconsistent a tough for the team to know what is going to happen to them in the same set of circumstances.