Well, I don't have him on any teams and I never have had him. And I'm not a Rockies guy at all.
But yahoo says:
It was thought Tulowitzki may be activated this week, but it doesn't look like that will happen. Apparently Tulowitzki just isn't 100 percent yet, and while Renck believes he'll return this season, it's looking like he'll only get in "a small number of games."
Is this a H2H keeper league? If so, probably not depending on how many you get to keep.
But if you really need the roster spot, maybe. I think you've waited this long, might as well ride it out -- especially in a Roto league.