No, it wasn't. Here's what happened on Aug 7th: (The Financial Times article revealing the Saudi investment was at 12:18 EDT and Elon tweeted at 12:48.
View attachment 342036
So you can see the base price was in the $342 range (also the previous day's closing SP), and the Saudi story was the trigger for the jump. Elon's tweet was confirmation of the News, but the majority of the rise in SP happened after the FT story broke but before Elon's tweet.
The Saudi investment
IS the story, not the madeup FUD-induced SEC attempt to pump the brakes. And with Q3 and the rampup in hand, Tesla has acheived escape velocity.