You're missing the point here. Dunnstral flipping his read on TB and joining the push on him while being able to distance himself a little from TB provides town a lot of information to work with, a scum flip (Meaning the game always ends at F3 instead of F5), lots of information to work with based on how D2 played out (Including him defending him then). Even if I'm not alive there's other people that have eyes, internet and the ability to read that would be able to bring up how TB interactions impact the living players, sure him intentionally bussing may have made it look
better
than not but it still doesn't make him look
good
. Better scum play, the one I would have made and the one I expect most people to make his maintain the town read on your partner and go for the win via pushing people that you think are mslynchable (ie. Dave/SH), again and this is something you have to agree with; Dunn couldn't have thought he was genuinely in threat of being lynched going into yesterday therefore he's not making moves that are based on self-preservation for himself.
Like you should never be able to remove TB-Dunn as a potential pair based on any of this, they may not be the exact scum team but there's nothing here, nothing at all that should allow you to remove this from the realm of possibility.