It's pretty normal over there, and not considered selling out at all. Off the top of my head I know Don Frye, Dave Beneteau, and Brian Johnston did it too. I think Oleg Taktarov, Bob Sapp, and Mark Coleman have too. Ken Shamrock also worked at least one match over there vs Bart Vale.
When given the choice between big business and big government, choose big business. Big business never threw millions of people into gas chambers, but big government did.
"It does not take a majority to prevail, but rather an irate, tireless minority, keen on setting brushfires of freedom in the minds of men" -Samuel Adams