UB $5.50 - Non-Results-Oriented Push Check

Button had been tight throughout the whole game but loosened up a bit once ITM. I'd played an extremely active/aggressive game from almost the first hand, stealing his blind from the button or SB on numerous occasions. Questioned my action thinking perhaps I should be avoiding such big stack on big stack action (no matter how juicy that may sound) at this point.

Blinds are 200/400

Button t5820
SB t3230
Hero t5920

Hero has TdTs

Button raises to t1400
Hero insta-pushes??