t-pein being self-conscious (i.e giving a shit about how his votes are perceived) is a scum tell for him. he initially voted prof and then quickly after was like "oh right I should be voting scum not hunting the indie..." and voted polar who others were voting as well. it's not a smoking gun but it is smoke for him
Small point in addition - he has a preference for Orca/Polar (Kindred spirits I guess) and is usually very content with ignoring them, I think his eagerness to use Polar as a means to an end could also be scum indicative for him. Not that Polar is that townie.