Well, you know I'm no kneejerk anti-Corbynite, but what do you expect?
(And I had a mercifully brief run-in the other day on an LBN thread with someone spouting the Hamas/anti-Semite crap.)
There's large body of Labour voters who're effectively disenfranchised in the Brexit debate by the party's current stance.
From the relatively strong speeches Corbyn's been making so far since the election was called, it seems he wants to fight conventionally on social issues and the Tories' parlous record in government, with an attempt at a strongly populist/anti-establishment stance, and all but ignore Brexit so far except to say Labour won't back a second referendum. There are dots to be joined there, but so far there's no acknowledgement from him of what an unprecedented power grab the Great Repeal Bill would be for the Tories.
What you report may be at least partly an opportunist attempt at continuing the split, but from what I can see, it reflects widespread frustration with Labour's capitulation to May's Brexit agenda.
Meanwhile, there are already some interesting cross-party local initiatives. It remains to be seen whether they'll bear any fruit. Here are a couple of examples:
Suffolk EU Alliance
https://www.suffolkeualliance.co.uk/
Sinn Fein, SDLP and Greens discuss anti-Brexit alliance in run up to general election
http://www.belfasttelegraph.co.uk/news/general-election-2017/sinn-fein-sdlp-and-greens-discuss-antibrexit-alliance-in-run-up-to-general-election-35639872.html
Kick in to the DU tip jar?
This week we're running a special pop-up mini fund drive. From Monday through Friday we're going ad-free for all registered members, and we're asking you to kick in to the DU tip jar to support the site and keep us financially healthy.
As a bonus, making a contribution will allow you to leave kudos for another DU member, and at the end of the week we'll recognize the DUers who you think make this community great.