Loss power when parking

Ball joint, rubber boot or track controlled arm. Wouldn't know until it's been inspected.

is the battery totally dead if it is you will not be able to take it out of park because you need electric power. if you have power then you should be able to move the shift selector if you hold on the brake and turn on the key. but if just want to move it u will need to put in neutral.

Has belt been inspected, tension checked?

Your problem is a bad CV axle and outer carrier bearing failure. The grinding is coming from brake rotor on that side due to the bearing failure. the brake rotor and bearing is causing the lock down. Do not attempt to drive or further damage will occur. Transmission is probably OK. Replace both sides (CV axels and Carrier bearings, 150,000 is time) Check brake components for damage and replace pads while you are there.

Wheel bearing totally shot, replace the wheel bearing. Might have to replace the spindle as well, because when the bearing locks up, it forces the outer part of bearing to spin, damaging the spindle.

Can you post a photo of the wheel ? Most of the moving parts of the engine are on the passenger side.

ON MOST FRONT WHEEL DRIVE VEHICLES...ONLY ONE SIDE IS MOVED BY TRANSAXLE...THE OTHER FOLLOWS. CONSULT THE DEALER

The rear brakes are in fact engaged.
The parking brake handle may be released, but the rear wheel brakes are on.
Jack up one side and see if you can turn the wheel, then check the other side.

Suggest you check your linkages to the tranny first, ensure nothing is bent. If your shift is controled with a wire cable, check it out also, maybe is rotten.

Additionally, you didn't clarify if your wheel is straight or turned to the extreme right or left. If that is the case, example: if the wheel is locked in the left turn position, pull on the steering a bit harder to the left to release the lever tension, that might get you out of park. Good luck!