I don't think it is fair at all. You are getting hosed in that deal.
If LT goes down, Turner would put up top 5 RB numbers. And, in my league at least, Horn is ranked the 45th WR after 2 weeks and Randy Moss is ranked the 65th WR. You are giving up an excellent handcuff and the primary reciever on a 2-0 team for a guy who hasn't produced yet and is on a team that has no hope of getting any better.
If people put up a stink in your league, they are idiots. Moss is a name only these past two years. His fantasy value is awful. Last year, he barely cracked the top 20 in fantasy pts per start for WRs, and that was with a legit QB throwing to him.
So you can quote that to anyone that complains about you getting a steal in this trade.