We have friends that have an Escape. They went through the same bit with Ford. Supposedly, their transmission was able to handle 4 down towing. On a return trip from Florida to Ohio, the transmission burned out. Since their manual said that it was towable, Ford installed a Remco pump, and they haven't had any problems since. If your manual said that it was towable, then maybe you can get Ford to absorb some or all of the cost. You might want to contact Remco and see what they say and what pump they recommend. They are not cheap, but it might allow you to keep the Escape.
W8RLM - Bob
2006 Winnebago Journey, Model 39K, 2013 Dodge Dart