Hi
There's a way to identify bsm, bma process in windows.
1) download 'process explorer' from microsoft site
http://technet.microsoft.com/es-es/sysinternals/bb896653
2) Open program. You'll see that looks like task manager but shows more info
On the menu bar: View --> Select colums
Click on Process Performance tab
Tick on 'Start Time'
Click Ok
3) Now You'll see a new colum With the start time of the jobs. If you sort data on that colum, the only thing you need in order to kill process is the backup start time. bsm and bma process fron this time are your candidates.
Hope it helps
Regards