Were Britain Bombers Duped into Dying?

Was my speculation a little while ago out on a stonger limb than I thought?

While it doesn't suggest that they didn't know what they were carrying, this report does suggest that the Britain bombers may not have intended to kill themselves.

Ongoing speculation: did a contact give them something to 'distribute'? Something that turned out to be a little less innocuous than they thought?*

*not being an apologist. Just canvassing possibilities