It doesn’t matter what the wind was. I’ll reiterate what I said about he transcript. From the conversations of the crew it is clear that at the start of the take-off roll was ZFW + take-off fuel = 91.9 + 95.3 = 187.2 tonnes, which is 2.13 tonnes above the structural limit.
By the way, it didn't stall. Delta wings can operate at any angle of attack so long as you have the thrust to go with it. The lift comes from 'vortex lift' and as such separation is not an issue. Hence the alarming displays we all enjoy from the Mig 29. What Concorde did was run out of speed and so control authority. The crew were unable to control a roll toward the dead engines and susbsequent falling of the nose.
No, the structural limit is the structural limit. They knew that and yet they elected to attempt the take-off.