I am not going to get into the ONCE AGAIN, Plush vs yags commentary here. But as far as eligible vs. ineligble...
Most top level skaters are "pros", in that they are allowed to earn money in competitions and shows. The difference between eligible and ineligible is the sponsorship of the show/tour they do. If they choose to be involved in a show or tour not allowed by their sport federation and the ISU, they can lose their eligibility to compete in such things as Worlds and Olympics. That is what Yagudin has given up, the more competitive world of skating.
Kasey