It is one thing for a guy brought in as an OL [such as Christian Ferrara, or Ilaoa in the class of 2020] to move to DT, and play there as a long-term shift.
It is another thing entirely to shift an OL on the fly to plug in as an emergency measure at DT, simply because they are big. That's the point I am making.
Not sure what player you are referring to from 1992 -- but the fact that we have to go back nearly three decades to find an applicable example if there should indicate how nonviable / uncommon practice this is.