I wouldn't worry about getting fired from Central as far as getting another job goes. Most of the terminal management of legitimate companies understand what Central is all about. They are not stupid. They read the papers, the internet, and hear the horror stories too. Central HAS the worst reputation of all LTL carriers. You will actually have a harder time getting a job BECAUSE YOU WORKED AT CENTRAL than because you got fired! How do I know....????? TRUST ME. I've NEVER lied to you. All you need to do is explain that you are a professional driver and that you could not stomach Central's complete lack of professionalism and disregard for the law. Any legitimate company will take the word of a professional driver with a clean safety record over a manager from Central.
Again, how do I know.....? ;-)
If you are a GOOD driver, you have done yourself a favor by getting out of there quickly. Sure, it would have been more convenient if you chose the timing, but getting out of there will do nothing but advance your career. YOU WILL BE FINE. Be honest with your potential employer about who your previous employer was. Explain why you refused the pickup. Let them review your record. Be professional. YOU WILL BE FINE.
For all the other Vitran drivers who have not heeded my advice yet, I sincerely hope you're paying attention.