Outgoing TUC fat cat Brendan Barber is still hanging around like a bad smell. Guido understands that last night the Speaker held a leaving party in his taxpayer-funded state apartment for the £100,000-a-year union baron. The drink was flowing as the usual union thugs like Ian Lavery and John Bercow’s old pal Jack Dromey said goodbye to their strike-happy former boss. Tories are spitting feathers this morning that union-lover Rob Halfon was also in attendance. As if Barber’s £1.5 million golden goodbye was not enough…