Another FTP $10/45 hand, playing from the big blind

[brad2002tj]

Blinds are now 400/800 and hero has advanced to teh final table with a healthy 10k stack.

Still 9 people remaining.

Hero (BB): 10,000
UTG: 5,000

UTG limps in. Action folds to big blind, hero has K[img]/images/graemlins/diamond.gif[/img]8[img]/images/graemlins/heart.gif[/img]. Hero checks.

Flop comes J28 rainbow.

Action?

Assume hero checks and UTG makes an 800 chip bet, then what?