Christian Horner - until recently said to be courting Hamilton for Red Bull until the team re-signed Mark Webber for 2013 - pointedly boasted that none of his drivers would ever reveal such sensitive data or commit an equivalent breach of confidentiality, as he referred to it.
"I haven't seen the tweet in detail [but] from what I understand it was car data," Horner is reported as saying. "If it was car data then I'm sure every engineer in the pit lane is having a very close look at it."
However, McLaren's technical boss Paddy Lowe insisted that the leak had done little harm to McLaren in reality.
"The data in there isn't any great use to anyone so I don't think there is much damage done," he said, adding that most of the data shown on the leaked picture would be available to rivals through other means already.
"He didn't really appreciate the nature of that information," Lowe told BBC Sport
. "The engineers don't like to see that because we spend our lives trying to keep things like that secret. It is more what it represents."
Lowe said that Lewis now understood the issues involved and understood his mistake.
It's been a fraught weekend for the relationship between Hamilton and his team. Before the August break it looked as though the two parties were back on good terms, especially after McLaren gave Hamilton a race-winning car at Hungary which he promptly piloted to victory at the Hungaroring. That gave rise to stories last month that the long-awaited contract extension to keep Hamilton in Woking was getting close and just a formality.
But the situation seems to have soured again since the team has got back to work, with Hamilton's evident discontent at being outpaced by his team mate in qualifying followed by McLaren's barely-disguised anger at the telemetry leak suggesting that the situation might be more terminal on both sides now than had been previously speculated.