Hi there! My name is XXXXX XXXXX X would be happy to help you with your question about Brumby.
Does his tummy seem bloated, tense, or painful?
It looks like you might be away from your keyboard, so I will go ahead and type up a reply for when you get back.
Considering that Brumby ate so many greenies, there is a serious concern of both bloat (a condition where the stomach can expend with gas, and eventually twist keeping them from being able to vomit or defecate) and obstruction (which when something a dog eats is slow to digest, and gets caught in the intestinal tract, blocking the passage of any other ingested material).
Both are emergency situations, and as Brumby is seeming restless, it would be safest to get him into the emergency vet tonight, rather than waiting for him to grow worse.
If you are unaware of an emergency clinic in your area, you can use this website here to locate a 24 hour vet clinic in your area by your zip code.
If you have any follow-up questions or concerns, please feel free to reply to me before rating, and I would be glad to address them for you.
Otherwise, I hope Brumby does alright and is feeling better soon!