Ok this has happened several times today, and to be honest its beyond annoying, its actually ruining my game and making me think of going elsewhere.
why not try something like this.
Once an interdiction tether is established you cannot pause or quit.
If you disconnect then the AI takes over your ship and you cannot rejoin the game until the engagement is over.
If the AI looses the engagement then tough, you loose a ship and its your own fault for chickening out.
If the AI wins, then its tough on the person that interdicted you.
This Game is Called Elite Dangerous, why have they made it so soft ?
Best way forward for this problem I've seen so far - I like it.