Here is a list of company reps on NamePros. There are 3 escrow.com users listed. Brandon Abbey used to deal with all the escrow.com questions on here, but he has left the company after they were bought by Freelancer.com.
I’ve often worried about a similar scenario happening with Escrow.com deals (pushing/transferring the domain, but the buyer not acknowledging that they have taken possession of the name).
I contacted their support about it, and they replied that I could send them a transfer proof email. I mainly use namesilo.com, and they don’t provide any transfer notification emails to the one who pushes the domain (only the receiver), so that is not of any help. They also said “you are welcome to follow up with the registrar to let them know that buyer did not update the contact information” - which is also not very effective. Most registrars don't strictly enforce true WHOIS info. And buyer could also just activate WHOIS protection. Those were the only two measures they said they had in place for this scenario.
The buyer disappearing right after receiving the domain, and not acknowledging that he has received it, has happened to me multiple times. Since I could not provide any of the above, Escrow.com eventually just started the inspection period after sending several messages to buyer. Since buyer did not dispute it, the sale eventually went through in this way. If he had explicitly said that he did not have the domain in his possession, I am not sure how it would have been resolved.
I still use escrow.com if there are no other options, but I otherwise try to stick to "true" escrow services, that take possession of both the domain and the funds, before releasing them.
Good luck getting it worked out.