Would it be possible to add an extra column of data to Insights? Namely, a "Parent" column, showing who the parent was of the PB'd process.
The reason is because sometimes multi-use programs are on the Insights list, such as "dllhost.exe", however, it's impossible to tell what might be responsible if there are a number of programs that utilize dllhost (or others).
Just an idea.
We do have a ticket to expand the data available in Insights, but I don't know when it'll be acted on. I'll add your vote to the list to get it done sooner rather than later ;).
In the meantime, you'll have to rely on the logs, and hope the action was recent enough to still be recorded there.