I'd still consider MT to be an elite FF Asset. However, it wouldn't hurt to shop him and see what you could get, because while he will still remain a top WR, his perceived value might drop.
Word Gase is also on the hot seat, along with the front office. I'm torn, as the Fins have had horrible luck healthwise the past two years. Also torn on Tannehill. I think he is better than most give him credit for, but also don't think he is elite.
IMO he's an ass for putting you in this situation. Of course his situation is much more important.. but at the same time he should suck it up, take the auto-draft "donate" his league dues this year and wait for next year.
Yes, you can do that by streaming. Use FA QBs and DST to stream, no need to waste valuable rosters spots on them, when the 'FA Bench' is much deeper and usually has better matchups than your 2nd, esp Dak.
I'm a DJ truther, he's a special talent. I also don't think Arizona is the train wreck everyone is saying. While the top FF backs are ones on great offenses, he is the outlier. His goal this year is to get 1,000 yards both rushing and receiving.