Well, I've only had my little guy for about a month but I do know that they a shy by nature. I'm sure that some are more active than others, but for the most part I think it is normal for them to spend their time curled up in their hides - that is what mine does. They are nocturnal so perhaps your snake is out and about more so at night.
As for feeding, every 3-4 days so too frequent to me. I feed mine once a week. I know that by overfeeding you could trigger a fast. You said you fed the snake and he ate with no problems, right? If the snake is eating okay why on earth would they force feed him?!? Argh! One more reason I don't care much for pet stores selling animals.