I am a senior Manager (GM) that has been Terminated without cause, after 16 months of employment, with very good results. I was told that the Company is "looking for a change in leadership" (verbally) but nothing in writing. I got 2 weeks of in lieu pay and was walked out the door......

Thank you for your question. Generally speaking, an employer can terminate an employee for any reason, so long as that reason isn't discriminatory and the employee is provided with appropriate termination/severance notice or pay in lieu thereof. Barring the existence of any employment contract that limits your entitlements to 2 weeks (and is enforceable), you are likely entitled to quite a bit more than 2 weeks, and so I would strongly recommend that you speak to a lawyer about negotiating a better severance package.