flat spins are different for different planes and it also depends on your cg
I had a stock magic 3d that would flat spin like it had a rod down through the wing the prop would chase the tail all the way down.
Pulling out of inverted flight 60 feet off the deck with up elevator is risky enough with a aerobatic plane let alone a heavy trainer type and if you snap like you did your pretty much done for theres just no room to recover when your that low it's best to roll out or try down elevator save the up elevator stunts for when you have safe altitude