From the video we find
The scorpion spider took the lead on the attack, it does not stop to catch the spider with pliers. But also to the use of the forelimb spider not resigned to playing second fiddle, resistance. But soon, scorpions, seize the opportunity, with tail barb stab into a spider's back, and at this time the spider also took the opportunity to close to the scorpion, the relentless bite the mouth.
Whether scorpions or spiders, are flat on the ground, both being poison poison.
Comment: double lose.