We noted earlier that Taz missed the recent set of TNA Impact Wrestling tapings and that repercussions could be coming for him. It wasn't the actual TV tapings he missed but a voice-over session in Nashville to record commentary for the Impact episodes that have been taped.
PWInsider reports that there are issues between TNA and Taz, who has removed all references to TNA from his Twitter page. The reported TNA pay issues apparently led to Taz refusing to get on his flight from New York to Nashville.
Regarding the commentary for Impact, Josh Mathews reportedly worked alone for the episode that will air this Friday night but that could change as they may edit it again with commentary from a second person. For what it's worth, TNA recently tried Al Snow out as an announcer.
Source: http://www.wrestlinginc.com/wi/news/2015/0414/592428/backstage-news-on-problems-between-tna-and-taz/