Xbox one x main screw (long) wont come loose urgent help needed please

Hi guys

So yesterday i opened my xbox one

X to replace my thermal paste all the screws came loos but not the one that is holding the power supply in place i have tryde everything

No luck i opened the power sypply asswell to try and fet it out it wont budge.

Please help urgently

Im in south africa im not working to send it in is pointless.

Please guys it urgent