Not saying this is a actually what happened.
But please all you twin drivers go and read up on Vmca.
You need to know how it changes depending what you are doing.
And also know how to sort it out if you have issues with it. Mind you on a low level GA there isn't a lot of time or energy to sort it.
To be honest even with commercial twin drivers its a relatively ignored subject Everyone thinks V2 is some sort of get out of jail card and if your above that your sorted. Even if you tell them well actually you can be at Vyse and be below Vmca they start scoffing that your talking rubbish.