Oh come on!
All the other political party leaders have a position on Brexit!
Corbyn can’t say which way he favours in case he puts off the voters, it’s as simple as that, nothing to do with honour or integrity.If he says he favours Leave, he pleases the Labour voters, if he says Remain he pleases the membership.He’s fence sitting as usual in case voters are pissed off with what he says.
He could easily say, we will have another referendum, and voters can choose between his EU deal and Remain, and that he will honour it, but he himself favours Leaving ( or Remaining.) there would be nothing wrong with saying that at all, it would clarify his position.But he refuses to do so because he is a weasel.