Hook within an exisiting hook? I have one hook, "hook_form_commerce_checkout_form_alter" and that is modifying something on my checkout process. Within that though I have a switch statement that if true I want to use "hook_commerce_checkout_router" to skip the page. Is this allowed? I can't get any signs of life via DPM. I ran through a bunch of other modules and can't find anything helpful
Since you're already loading the form, your switch statement won't do anything. If you want to skip the page, you'll need to implement hook_commerce_checkout_router() in your module so that you can control if it shows up or not.