
It's a difficult one, especially with a 12 month old male (juvenile delinquent). JG I'm impressed 'Perfect Recall' is in your volcabulary with Dalmatians :D.
You have got to make yourself more exciting than what is going on around you. If he responds to food, take some really tasty ones with you, put them in something you can shake, perhaps a pebble or two in it so he responds to the sound, but make sure you call and treat on several occasions, not just when the distractions are there. Failing that a ball on a rope which you can play tuggy with, only an arms length from you then.
It comes eventually, just try not to chase him, go off in the other direction, if a safe environment hide and hopefully he will panic that he can't find you. This worked on every dog of mine, except the Dalmatian !!
Good Luck
Sandra