Jason "JCarver" Somerville raised to 30,000 from under the gun a few hands prior to this hand, where he opened for 28,000 again from the button. Maybe Jason DeWitt picked up something based on bet sizing, or maybe he just felt Somerville has been opening too many buttons (this is the second one we have seen already), but he decided to shove over the top of Somerville.
Somerville had the pressure back on him with 260,000 chips left in his stack. He took some time and then mucked his hand, allowing DeWitt to take the pot in preflop action.