Yes, but it wasn't for Reboot. It was just a prop. It was to prove a point that the voting could be manipulated to an extreme level. And to anger people who liked really popular shows like X-Men, Spongebob, Duck Tales, South Park, Courage, etc.
The goal was always to get Reboot to quietly slip to 3rd by rationally convincing people that voting a certain way was in their interests. No alliances, no hard instructions to kill this and save that. For example, I suggested one poster to change his throwaway save (Batman) to Reboot if he really wanted to kill Spongebob (and double down on kills). The best was convincing people who wanted Reboot dead, and voted to kill it, to change their votes to something else because "Reboot had plenty of kills already" and here are reasons and stats why voting like this will save your show from that second elimination spot. I also checked voting patterns from all previous rounds to see who best to contact for any little way that could help.
Another tactic was diverting saves away from a show I wanted to see killed. e.g. SpongeBob is fine, but I see you mentioned liking Tiny Toons in round X and its racking up kills *shows real but misleading stats* so consider throwing your save at it. Just a lot of little things like this. It worked and got thanked a lot for appearing to be on everyone's side. Sorry for bragging, but it was hilarious and fun. Reboot lasted 4 rounds longer than it should have and almost went on to another undeserved round taking down another big favorite in the process. I feel proud of that, although I would've been happier if that eleventh hour alliance had sacrificed DBZ instead and rallied behind Courage in order to kill Reboot.
I don't know what secret deals went down to keep Hey Arnold around (edit: apparently none), but I do know that the changes in voting rules have really helped keep it alive longer. The Arnold haters would've had enough double kill votes to get rid of it long ago.
