Bosch WFMC2100UC Washer stops in mid-cycle

I have had the washer about 4-5 years and recently, it began stopping the wash cycle in the middle (it seems like after the clothes are rinsed but before the drain cycle begins). There is no fault displayed, and it seems that the counter will be reading as if it is starting all over again (for example reading 1:05 on a load that should be finished with the rinse cycle and at about :20 minutes instead!) Also, when this occurs, the door is unlocked by the machine, and pushing the "Start" button does nothing. I have to rotate the dial to "Off", and begin the cycle again. Sometimes this works, sometimes (most times) not! I end up using the Hand Wash cycle to drain and spin the clothes at this point. My first thought would be the main circuit board (Controller), but at $260 for a new one plus labor, ouch! Just had a new front door seal done on this thing 3 months ago, and just that simple operation put me back about $250 from the Bosch repair guy (who seemed completely unfamiliar with Bosch washing machines and kind of hack to be honest!)