Jumping worms are quite obvious in late summer and if you did not see any, then would not think the worms are the problem. for more information - https://extension.illinois.edu/sites/default/files/invasive_species_alert_jumping_worms.pdf
There is no effective treatment for jumping worms
Towards the fall of the year both skunks and racoons will tear up the lawn looking for grubs (I understand you had the lawn treated). Racoons back up pulling the sod up as they go, skunks dig individual topped shaped holes.
After finding no grubs, they move on, but not before doing damage. I hope this helps.