It's close to impossible for the logs to be incorrect, especially in a scenario such as this one, if the logs imply that you threw the grenade and especially that you killed people with it - There is no doubt that you did so.

It's close to impossible for the logs to be incorrect, especially in a scenario such as this one, if the logs imply that you threw the grenade and especially that you killed people with it - There is no doubt that you did so.