Echo running off- ignore? How long?

The reason I said that is that when it comes to recall, above any other cue that you teach a dog, the object is for the dog to really, really enjoy getting to you.  I sensed some frustration and an attitude developing that suggested this dog was stubborn or being a stinker - that's rarely the case, even though dogs can frustrate us when they don't come - it's usually just due to lack of generalization of the come cue, or to lack of understanding, or to insufficient training to convince the dog that being with the human beats all the other stuff he could be doing!

Thus, if the modus operandi of a class is based in a culture of "must do" rather than "get the dog to want to do" things can really go south with the recall.  There are some common reasons why recall training fails: Owner, allows dog off leash before the recall is solidified on leash (on progressively longer leads, and lighter leads); owner punishes dog or scolds dog when it does get to them; owner creates a situation where "come" becomes background noise because they continue to call a loose dog that won't come (fall on the ground, throw food, make silly noises, but don't say "come" lol); they don't use food, or something the dog really values, as the reinforcement for coming; they show the dog food *before* calling it for more than one or two repetitions; and they don't take the time to train an emergency backup cue (in case others overuse the come cue without backing it up - there is a benign penalty that we can use for dogs on lead that do not come).