Look behind the verdict. The imperative "in, in" (ἔσω ἔσω) — to open up the TERMruling part of those whose judgement you fear. Once you enter their judgements, you see "what judges" you dread: they judge even their own affairs awry. The verdict of a corrupted mind is not worth fearing. It is the same move as at 7.62 (look into the "sources of impulse" of those whose praise you seek) and 8.61 (to enter another's ἡγεμονικόν).
A therapy for vanity. The passage strikes at the DOGMAemptiness of fame: the fear of disgrace and the craving for praise rest on an inflated valuation of others' judgement; dissecting the "judge" lays bare his incompetence (cf. 4.19 — posthumous memory in the mouths of mortals just like these). The governing discipline is assent (to revalue others' opinion), the sustaining one desire (to be freed from the craving for fame).