"The real question is why would anyone sell at this time????"
You answered this question yourself earlier in your post when you said-
"They caught me by surprise otherwise i would have dumped and bought back lower."
Other traders did what you wished you had done and sold the minute they saw VNDM. They hit the bid almost instantly. You can argue a better course would have been to hold and hope VNDM and SUNR didn't have a lot of shares to move but it's obvious the herd got spooked and trampled everyone on their way out the door. I really thought more shares were dumped by traders yesterday than by the other sellers. Best regards.