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I have little doubt that it could be reprogrammed via the CAN bus, the problem being figuring out the commands, which would be a lot of work, and only worthwhile if this was a common enough problem to be worth spending the time on.
In the JSON file for PEB ecu, I have found these functions :

{
"name": "DataRead.Vehicle_Identification_Number",
"replybytes": "618100000000000000000000000000000000000000",
"deny_sds": [],
"receivebyte_dataitems": {
"Vin In Ascii": {
"ref": true,
"firstbyte": 3
},
"Vin CRC": {
"ref": true,
"firstbyte": 20
}
},
"minbytes": 21,
"sentbytes": "2181"
}

{
"name": "DataWrite.Vehicle_Identification_Number",
"replybytes": "7B81",
"deny_sds": [],
"sendbyte_dataitems": {
"Vin In Ascii": {
"firstbyte": 3
},
"Vin CRC": {
"firstbyte": 20
}
},
"minbytes": 2,
"sentbytes": "3B8100000000000000000000000000000000000000"
}

I'm not a DDT4ALL expert, but maybe it's an idea?
 
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