Most the trusted Escorws on here are very busy and its normal for them to take a while to get back to you. Most of them are probably in the process of escrowing transactions so I'd assume it works like a queue system. They'll get to you when they know they can do it and when they have time.
If you need to do this deal quickly, I can help act as an escrow (for a small tip ). I've escrowed a couple of deals here before.
Let me know if you want me to help