Inspecting the page shows the width on that Facebook like button to be 600px. That width plus the widths of the other buttons is bigger than the container that they're in, so the FB button wraps around. I used the developer tools in the browser to adjust it down to 400px and there was no wrap around. If you're adding it with the JFBConnect > Social section, please adjust the width parameter for the Like and see if that resolves the issue.
-Melissa
Alignment of social buttons
