What happened
Written from the data, not opinion.
Options positioning puts the call wall at 90,000 and the put wall at 83,000. Dealers are estimated to be long gamma, where dealer hedging tends to dampen moves.
At 01:27 UTC a 161 BTC bid wall at 81,975 was eaten by market orders.
At 01:57 UTC a 140 BTC ask wall at 82,450 was pulled before price reached it.
The bid wall at 82,381 held at 02:01 UTC: about 70 BTC traded into it and price turned 173 USD away.

