Looks like something startled him and he shot off! Either that or he just felt like being whizzy
They really do have a sort of personality change after dark. He will wait for you to go to bed and darkness before getting up, so if you then go down to see him, he will be a bit like "oi this is my private time!".
I would persist with the 7pm thing. He sounds like our first hamster. If he only pokes his head out, then next time try putting a tube over his house entrance with a smelly treat at the far end - he should walk into the tube and you can lift him out that way. He'll be fine once he's out. Although maybe a bit dopey! But at least it's handling time.
Some hamsters take a lot longer to build up confidence than others. Also I think as the nights get lighter you may find some improvement. My Syrian is already getting up a bit earlier every night recently.