make an option if sd-card stop should release the steppers.

Marlin/Configuration.h

 //LCD and SD support
 //#define ULTRA_LCD  //general lcd support, also 16x2
 //#define SDSUPPORT // Enable SD Card Support in Hardware Console
+#define SD_FINISHED_STEPPERRELEASE true  //if sd support and the file is finished: disable steppers?
 
 //#define ULTIPANEL
 #ifdef ULTIPANEL

Marlin/cardreader.h

 #define __CARDREADERH
 
 #ifdef SDSUPPORT
- 
+
 #include "SdFile.h"
 enum LsAction {LS_SerialPrint,LS_Count,LS_GetFilename};
 class CardReader
   void startFileprint();
   void pauseSDPrint();
   void getStatus();
+  void printingHasFinished();
 
   void getfilename(const uint8_t nr);
   uint16_t getnrfilenames();

Marlin/cardreader.pde

 //#include <unistd.h>
 #ifdef SDSUPPORT
 
+#include "Configuration.h"
+
 CardReader::CardReader()
 {
    filesize = 0;
   }
 }
 
+
+void CardReader::printingHasFinished()
+{
+ sdprinting = false;
+ if(SD_FINISHED_STEPPERRELEASE)
+ {
+   finishAndDisableSteppers();
+ }
+}
 #endif //SDSUPPORT

Marlin/ultralcd.pde

         #endif
         if((activeline==line)&&CLICKED)
         {
-          card.sdprinting = false;
+          card.printingHasFinished();
           BLOCK;
           status=Main_SD;
           beepshort();