Don't worry. You are unlikely to tumble down the ladder. For a variety of reasons it's sometimes necessary to take a lateral or backward move.
Stay flexible, remain positive, and don't sulk. Instead, do the best job you can while devising a plan to get yourself moving in the right direction.
In an economy where there's a dearth of jobs, continue to build your skill level and expertise by taking classes, seminars, or certification courses so that when jobs do open up, you have a leg up.