[konafocuswrc]

i had same issue and replaced it like 2 years ago.

i dont remember correctly but as far as i remember it needed to be squeezed and lift up to relaease from the tab.
it was very hard to get that clamp off.

i would just cut off old pcv hose and replace clamp with the one has screw on it or the same style as coolant hose clamp.