They say they put out new package; I take that to imply they don't rewrite files once deployed. But what you're describing has interesing failure modes indeed

They say they put out new package; I take that to imply they don't rewrite files once deployed. But what you're describing has interesing failure modes indeed - from just successfully patching the running process to the SIVSEGV to having the target process ending up in an infinite loop (BTST).