Cure the NHS campaigner Julie Bailey said NHS boss Sir David Nicholson had not accepted responsibility for what happened at Stafford and is simply "waiting for his retirement".
"We're disappointed that he's not going immediately to be honest", she said, "this man presided over the biggest disaster in the history of the NHS, he'll be leaving with a huge pension pot and with his knighthood intact but he'll be going eventually and then we can start to cure the NHS."
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A High Court judge ruled he was entitled to "more than nominal" damages from police over a wrongful arrest he says destroyed his career.
The ex-Holby City star, who had been visiting Barcelona, detailed the events of the attack on Twitter as they unfolded.
Searches are continuing for victims, with around 600 people still missing and 3,000 left homeless after the disaster.