There is not supposed to be any prior relationship between the SPAC's sponsors and the company being acquired. I believe it violates SEC rules. So the VC shouldn't be able to set up SPACs specifically for acquiring their own companies.
And yeah the SEC has input on the wording of the proposed target company vote. So they would eventually know.
But since VCs typically have single to low-double digit ownership of anything in their portfolio, it would probably pass muster just fine. Would just need to be disclosed.
I’ve seen SPAC investors approve buying newly formed companies, formed two months prior. So they’ll approve anything (except buzzfeed lol)