BUT, if he really was the right man for the job, none of this fighting would have happened.
the fighting is happening precisely because he is the right person for the job.
The job being to overturn 40 years of neoliberal doctrine at the top of both Labour and Conservative parties, and more recently pro-austerity doctrine that the Labour Party had signed up to under Milliband / Balls.
Those who've been installed at the top of the tree in the labour party by 'Progress' were never going to roll over and give up the party willinging, but give it up they must if this failed doctrine is to be successfully challenged and consigned to history (unless they have a complete conversion).
IMO if corbyn wins again with a big mandate, then any PLP members who continue to oppose him in parliament will be handing Corbyn the means to have them disciplined and remove the labour whip from them. I hope he now realises that they're not going to play nice, so he has to use all the tools at the disposal of the party leader to enforce party discipline and remove those who refuse to accept the will of the membership.
If he does this, then and only then will we potentially get some real opposition to the tories, and give the membership and supporters something to really fight for at the next election. Non-entities like Angela Eagle with austerity light policies have no chance of mobilising the support needed to beat the tories.
Someone who're caused the Labour membership to soar to the highest level for decades, and more than triple the pre-election levels really can't be seen as being the automatic election loser that the plotters and the media lackies are making out. Apart from anything else that should be something like £12 million a year extra going into the Labour budgets, plus enough members to mount full campaigns in constituencies where this hasn't been possible since the loss of membership after the Iraq war.
I strongly suspect that this membership level could well double again by the next election if corbyn remains and he's able to bring the PLP to heel and really take the fight to the tories and come up with the radical non-austerity / neoliberal based set of policies for the next manifesto that a huge proportion of the country is desperate to see.