Higan is literally controlling the Mech's arms and legs, the pauldron is connected to the arm. I never said Slimy tripped over the pauldron and got shot did I, I said it would have had to pass over the pauldron to clear itself off the Mech, impeding its progress and revealing which direction the Pater jumped off. It's by the same merit as if you were in a car and a lion jumped up on top of the roof, if it then launched itself off the side you would feel it inside the car. Same process here, except Higan's arms are literally connected to the Mechs so it's more noticeable which direction the pressure comes from.
You failed to point out that your character carefully stepped over the pauldron, aware that touching it would reveal its escape. Last I checked the Pater just threw its weight rightward and dived out the way, logically it would use anything it could find to help in that endeavour and may well have clawed its way over the pauldron to get extra lift. Fact is, I can interpret things you leave deliberately vague how I wish, it made very little sense to me that the Pater would choose to dive off the side with a literal barrier to its speedy escape, so it cost it. That's your mistake.
However, what you can't do is go back and change what your character did after realising your mistake. You could appeal for a judge and try and make the claim that your post suggests the Pater avoided the pauldron and therefore Higan has no knowledge of where it is, though considering you didn't mention it at all but did move right over it I fail to see what merit that argument has.
You're acting as if I've made the Pater trip over, when in actuality I've just accounted for something you've ignored and used it to my character's benefit.