Some are saying that nickname is more appropriate than "The Spider":
We want to issue an official statement regarding the seminar that was suppose to take place this weekend with Anderson "Spider" Silva. We received a phone call last night from Anderson's manager Ed informing us that the seminar was going to be canceled due to a personal family health issues. Obviously we were taken a back and concerned for Anderson and his family. We were also very disappointed for all of our students and fans who had planned to attend our seminar this weekend.
It was brought to our attention this morning that Anderson and Nogueria are both having a two day seminar at their grand opening event in Miami. If this is true then we have been completely mislead and as you can imagine we are furious at this. We are doing our due diligence to confirm that this is really happening. If this is true we will take all legal recourse possible.