my curve does weird

[ShoneSplash3]

normal state of the rigCan someone please help me with my animation issue? the issue is that when I move the nurbs up my curve does weird and goes down at the places where I don't have any nurbs. how can I fix this problem or how can I do it in a different way to still get my snake to look up.
this is when I move the nurbs upwards

[gautham.chandran47]

This is a rig by you or you downloaded it ?

[ShoneSplash3]

yes I rigged it myself but I fixed the problem already.

The problem was that I made a cluster of two joints and forgot to move it up with the rest of the nurbs.

Now it all works fine but still thx for the help you would maybe have given :p.