I did get an email back from buyer stating he still wants to finish the deal, there was no explanation as to the reason why he had to leave town.  Gary with JLL sent over a form that buyer has to complete, I forwarded this to AJ.  Gary said that he though he could get everything needed re: lease out of MetLife within 14 days including weekends, from Oct 5 which would be around 19th.  I mailed the seller a message telling him that I was concerned that he is compromising his earnest money.  Monday am I emailed buyer again requesting that he sign and return the extension, and also requested that he stay in communication with me as the seller is upset.