You answered your own question
Some builders have noted it happen with as low as stock boost. The higher the boost the more likely to bend the end.
They weld on a plate to the end so it doesn't push in. The brick is like a mini-radiator so the end is the part that gets pushed in. If it doesn't leak you have lost flow and charge cooling efficiency. If it does leak it could be bad depending on how big the leak.
It is on a checklist of things to do for any saavy LSA upgrader. Only about $100 mod. I haven't done mine yet but it is at the top of the list.
I would consider that less of a problem than newer SC engines completely blowing the fins off their intercoolers, yikes.
They posted before me so sounds like I was derrr repeating what they said, oh well.