WE ARE OUTRAGED TMZSports.com
The student who says a coach ran up from behind him and choked him with a rolled-up shirt earlier this month is now planning to sue the man and his school ... telling TMZ Sports he's dealing with back pain and several other issues stemming from the scary incident.
14-year-old Michael Moon says it all happened back on June 4 ... after a coach at his Ypsilanti Middle School had seen him "horseplaying" with one of his female classmates.

Coach Choke Fox 2 Detroit
Moon claims the coach asked him to do pushups due to the interaction -- but when Moon told him he couldn't do them because of a hand injury he had recently sustained .