With the leverage of the SS springs to start with, the shocks probably were close to too weak at the tightest setting, then when you moved the shocks forward that reduced the control maybe as much as 30 percent.
It is hard to tell, but I see a lot of separation at the rear, then spin a short ways out which is probably why the front drops back down so fast. I would put the shocks back where they were then try them full stiff like I suggested earlier. If things improve at those settings, then get worse as you loosen them, send them in for stiffer valveing.