In the sense that either can impede (be an impediment), they are not opposites, but they are also not generally synonyms.
I think the opposite of "hinder" is "help".
The opposite of help is hinder.
delay, hinder, impede.
deter discourage dissuade and hinder
The opposite of hinder is to help, aid, or assist.
Disentangle means the opposite of entangle. The sentence would be: he disentangled himself from the spider web.
hinder, cease, decline, fail, fade
Disentangle is the opposite of entangle. He disentangled his hands from the wool.
To cease, decline, fade, fail, flounder, hinder, languish, stunt.
The opposite of support (hold up) is to undermine, destroy, or collapse. The opposite of support (help) is to neglect, oppose, or condemn.
The opposite of further (to a greater degree) would be lesser. The opposite of further (farther) would be nearer or closer. The opposite of the verb further (aid, assist) would be to hinder, impede, or obstruct.
endear, enjoy, encapsulate, entangle