[sigcurious]

You do realize that Russell Pearce was a state senator, not a United States senator right?

Under Article I, Section 5, clause 2, of the Constitution, a Member of Congress may be removed
from office before the normal expiration of his or her constitutional term by an “expulsion” from
the Senate (if a Senator) or from the House of Representatives (if a Representative) upon a formal
vote on a resolution agreed to by two-thirds of the Members of that body present and voting.
While there are no specific grounds for an expulsion expressed in the Constitution, expulsion
actions in both the House and the Senate have generally concerned cases of perceived disloyalty
to the United States, or the conviction of a criminal statutory offense which involved abuse of
one’s official position. Each house has broad authority as to the grounds, nature, timing, and
procedure for an expulsion of a Member. However, policy considerations, as opposed to questions
of authority, have appeared to restrain the Senate and House in the exercise of expulsion when it
might be considered as infringing on the electoral process, such as when the electorate knew of
the past misconduct under consideration and still elected or re-elected the Member.

As to removal by recall, the United States Constitution does not provide for nor authorize the
recall of United States officers such as Senators, Representatives, or the President or Vice
President, and thus no Member of Congress has ever been recalled in the history of the United
States.

Source

So in short, no it is not viable.