Is there a way to manually convert LP tokens back to the underlying assets?

Just wondering, if something were to happen to a defi site, maybe the domain were to get hijacked, the developer vanishes, the site becomes inaccessible, etc., is there a way to manually unstake the LP tokens and convert them back to the underlying assets, without access to the defi site they originated from?

Staking some stablecoin pairs seems pretty low risk, but if reclaiming the assets is at the mercy of some random site developer paying his web hosting bill every month, that’s a whole different scenario.