Is it possible that the “V’ is a cone, and that the debris was shattered in all directions?
Or is it more likely that the Sun’s magnetic field made the shattering of Ison just a “V” and more in line with the positive and negative of the field lines when and where it shattered?
No.
Because that is not how comets act.
The one portion of that v is facing away from us.
And the pieces of an object that is tidally disrupted tend to continue down the same orbit.
Shoemaker-levy 9 is an example of that.
It had been orbiting Jupiter and then tidally disrupted.
The pieces had two years to spread out.
The spread into a straight line.
Magnetic field lines wouldn’t do anything to the comet.
The field lines resemble a coil watch spring.
If the comet reacted to that, you’d see a smear resembling a paintbrush stroke following an arc from where it is at back in a huge curve towards the sun.
Instead, what was left of ison prior to fading out behaved like a typical comet.
Dust trail along orbit, tail pointing away from the sun.