My dog is a 2 year old lab x and usually walks nicely on the lead. I would take him to the park or up the downs depending on the weather and let him run off lead. He would always comeback on his recalls which is good. However lately he has become challenging and refuses to walk in the direction I'm going, he would cower and if I tugged the lead he would refuse even more. He attempts to do his own thing such as walking into the rd or the opposite direction. So I used treats to encourage him to move forward. Sometimes it works but others it doesn't. He has started to do this more often after going to the park. He just wants to stay out and play longer. It's now getting to the point where he refuses to cross the rd to our house or refuses to step into the gate outside our house. He still plays indoors, so I don't know why he's suddenly refusing to go home. I don't like using treats to coax him to walk as I feel it's rewarding the behavior. Tugging doesn't really help either as he cowers even more. There are no triggers, he is just eager to stay out.I've tried praising him too, but it doesn't work every time. Would using anti methods such as spraying water help break him out of the behavior? The stern NO makes him cower and doesn't seem to help the situation.