did we get this right tonight?

[Jurassic Referee]

It's not a double foul; it's a simultaneous foul. Double fouls are committed by 2 opponents against each other. That didn't happen in your situation.

You charge each player with a foul, no FT's are shot and you resume at the POI. In this particular case, because the try had left the shooter's hands before the foul the POI also happens to be the arrow.

See rules 4-19-10, 4-36-2(c) and 10-6PENALTIES1(d).