Seth is up a tree poisoned, but not restrained in any way.
Ajay is suspended mid-air by web that is covering him from shoulder to ankle. He isn't up against a tree, but rather between trees as he is being hung by the end of a branch.
Here are some suggestions. Feel free to come up with your own idea is you want.
1. Attempt to throw your knife and cut the web holding Ajay (this would be Act under Pressure, and Ajay would take 1 harm from the fall)
2. Attempt to climb the tree and break the branch Ajay's web is hanging from (this would be Act under Pressure, with the risk that you fall out of the tree)
3. Use magic to deal 1 harm to the web he is stuck in (this would bue Use Magic, with the risk that you would hurt Ajay or yourself or perhaps get very close to triggering a dark side, but unlike the other options this would fully free Ajay, not just get him down, though he would still fall)