These two unwrapped lines show the difference between the virgin NEF file and the corrupt one.  I first opened the virgin copy and then told WORD to compare it with the corrupt copy. The strike-out characters show the newer CORRUPT file. The underlined ones show the original VIRGIN file.

MM * ک–    ‏                                 x           0                         
MM *       ‏                                 x           0                         

This is the beginning of the VIRGIN file.
MM *       ‏                                 x           0                         

This is the very beginning of the corrupt file.
MM * ک–    ‏                                 x           0                         





Apparently the following was added to the very END of the virgin copy to create the corrupt copy. Unlike the above, NOTHING was deleted from the end of the VIRGIN, data was ADDED to the Corrupt file.
   ‏                                 x           0                          
     !   8           \        
   p          |¼                       x          ل            |           „             (           1     
   Œ 2         ک J        ]¼           ƒ»     	 ک—ز‡i         ًگ          ـ’                        7  20031020  < 
155925+0100                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

The final 3 lines of the virgin copy had this:
 %sُ&d &ن 't
$ن  %ن $ن %t $`
Pآ 

The corrupt copy had this at the very end:
 %sُ&d &ن 't
$ن  %ن $ن %t $`
Pآ    ‏                                 x           0                          
     !   8           \        
   p          |¼                       x          ل            |           „             (           1     
   Œ 2         ک J        ]¼           ƒ»     	 ک—ز‡i         ًگ          ـ’                        7  20031020  < 
155925+0100