• viśīryamāṇam — being torn apart
  Present passive participle of vi-√śṝ (to break, scatter). The army does not collapse all at once; it is being torn apart in real time. The verse marks the moment Bāṇa sees his structure dissolve.
• ati-amarṣitaḥ — extremely intolerant
  Compound: ati (very) + amarṣita (unable to tolerate). Amarṣa is the asura's reflex — what bhakti calls titikṣā (forbearance) the asura cannot perform. Bāṇa's intolerance is the inverse of the Vaiṣṇava's chief virtue.
• abhyadravat — rushed toward
  Imperfect of abhi-√dru (to run at). The same root as dudruvuḥ in the previous verse — his soldiers ran away, he runs toward. Both motions end in his loss; the asura cannot stay still long enough to surrender.
• hitvā eva sātyakim — abandoning Sātyaki
  Bāṇa's mistake is to break engagement with his appointed opponent to challenge the Lord directly. Gauḍīyas read this as the conditioned soul's typical leap: skipping the guru (here, Sātyaki, who would have ended him in due course) to confront Bhagavān unprepared.

• Where is my own wounded pride pushing me into a confrontation I am not ready for?
• How might that very confrontation actually be the Lord drawing me close?

An asura's logic is escalation: when the periphery breaks, charge the center. Bāṇa abandons Sātyaki and rushes Kṛṣṇa — exactly the wrong direction, the way a moth charges the very flame that is already consuming its kin.