escrow delays due seller (allegedly just now) received NOD

[Julia Fergo]

buying a house in LA, standard sale through escrow, the agent represents both the seller and me, the buyer. At this stage my lender who is ready to fund and I already wired all 20% down-payment. The last thing was walk-thru. and record tomorrow... Suddenly get a message from escrow ... we are not closing tomorrow, we are waiting for the updated payoff demand from the sellers bank...!Allegedly the seller discovered JUST NOW (we were in 45 days escrow) they have a lien on the property. I am thinking... they knew it before but played me as the HUD didn't contain any seller's payment break down and the final title wasn't forwarded to me neither. Any feedback/advise from the experts? :) Also since i am in the dark and didn't get the NOD or payoff info