The trial lawyers whose oxen Sean is seeking to gore fought back by asking for the court's permission to depose Sean on his standing and the basis of his legal opinions. This sort of harassment is common when you've got rich lawyers going up against an underdog opponent (it's the discovery equivalent of a SLAPP suit). They try to make it too expensive for the underdog to vindicate his rights. (In my humble, First Amendment-protected opinion, of course.)
VC Glasscock shot down their request, refusing to order the deposition. Good man.