When unsrewing the old element it became tandled to such an extent that it is impossible to get it out. What should I do? Can I unscrew the six or seven nuts taking off the plate from the geyser into which the element fits?

OK Henry,
We need to know what a "geyser" is and what in the world is "tamdled"?
Are we talking about a water heater element? A flange type heater element has 4 bolts not six or seven so you lost me there too. Please clarify and let us know what we're dealing with. Thanks, Tom