Here is a good video of one method to deal with a dog with distractions. The main theory is find a distance far enough away from object and work on other behaviors such as sit, down, leave it and touch.
For your situation it would be best if you could get a friend to walk a dog maybe on the other side of the park however far they need to be away for Odin to not react and work on it.
https://www.youtube.com/watch?v=U-VY_H_TG_Y&list=UUZzFRKsgVMhGTxffpzgTJlQ