Context Node Add Form and Wrong Button Position
Have you tried adding the submit button separately from the contact form?

If you are using an override to the node add/edit form in panels, try this:

1. Click on the little gear of your region to add content

2. Select Node form submit buttons which is under the "Form" heading

3. Position the form submit buttons where you want.

We had a similar problem on a Drupal 6 installation, and I think it may work on Drupal 7 as well.

Hope this helps