Here's a photo:
View attachment 597884
The red arrow points to the release lever.
The blue arrow points to the locking arm.
Note that
first you have to push on the locking arm towards the bike to relieve enough of the tension that you can actually release the lever.
Then, while holding the release lever up with one hand, you use the other hand to pivot the locking arm away from the bicycle. You have to hold the release lever up the whole time you're moving the locking arm (and it normally likes to catch on the track even so), so it's a two-handed operation.
So far, so good. But, now to the other wheel.
You repeat the process, pushing on the locking arm (although there's no tension on it now so it's easier), then lifting up on the release lever while swinging the second arm out of the way.
Note that at this point the bike is unsupported and will tilt towards the car or you.
@flar 's description of rolling the bike out from the second arm, lifting it and placing it on the ground ONLY works if Both of the following are true:
1) The bike's wheelbase is short enough that rolling it out of the second arm doesn't have it roll into the folded first arm. My bike's wheelbase is 52", so it does. The bike in the photo appears to have a shorter wheelbase than mine AND has smaller diameter wheels (mine are 27.5's).
2) Your bike is light enough that you can lift it up enough to clear both arms. You have to be pretty darn strong to lift a 60-lbs bike several inches up above the rack platform to clear the arms AND not have the front wheel spin in ways you don't want.
Perhaps
@flar would be willing to post a video showing how easy it is for him to unload his eBike, especially from the slot closest to the vehicle.