Now, the question there Omis, is if Rockin is a mafia roleblocker, why would he block their kill target? If only one person can be tracked to the death, why would he, knowing he would not be so, choose to roleblock the death which couldn't even affect the game whatsoever? Now, there is the option of EE and Rockin both being scum, and this not actually being an ability at all just a fake to cover their backs in the event of Rockin being tracked to the death at some point, but I'm not sure that's too likely.
Now, if that last point is not the case, Rockin would have had to make a terrible move to roleblock the mafia's target(which he would know). While it would make an arguable case that it was such a bad move it couldn't be, it also puts very unnecessary pressure on him to be tracked to the death, when he could choose someone else and be seen as a pr.
On the other hand, and the last potential option I see, is if the mafia was worried that Hando structured this like an EM game. Scum sends in votes who to kill, and any scum voting to get the majority necessary can be tracked to the dead body. If this was the case, it would open up the possibility that he no-blocked in fear of being tracked. I don't find this very unlikely, but it's not a strong enough theory for me to put my vote to yet.