Jackson Cullinane also said that Labour activists in Scotland "simply cannot stomach" working alongside the Tories and that his party in Scotland had been "bounced" into the No campaign, and warned the pact could "haunt Labour" at future elections.
Mr Cullinane's comments come on the same day as former Lord Provost of Glasgow Alex Mosson revealed his support for independence and two weeks after former Strathclyde regional council leader Sir Charles Gray said he was backing a Yes vote.
SNP MSP Linda Fabiani said:
"This attack on the No campaign by Johann Lamont's own party chairman is a challenge to her authority.
"It shows that Labour are split from top to bottom by their alliance with the Tories. The reality is that the No campaign is Tory-led and Westminster-led.
"History tells us that promises for better devolution and more powers in return for a No vote are quickly broken by Westminster - which is why a YES vote next September is vital.
"A No vote is a vote for no more powers. All Scotland got after the 1979 referendum was 18 years of Tory Government we didn’t vote for.
"More and more Labour supporters and prominent Labour figures - including Glasgow's former Labour Provost Alex Mosson and Charles Gray the former leader of Strathclyde Regional Council - recognise this fact which is why they are backing a Yes vote in next year’s referendum.”