Ryan Matthews & SF Def <--->Dez, Best, Pitt Def

[Soul Rebel]

I already have McCoy, Forte, Bush, and Daniels in addition to Matthews at RB. My WR's are hurting.... Fitzgerald, Decker, Braylon Edwards, Preston Parker, Miles Austin (hurt) and Santana Moss (hurt). I know Best has the concussion, so it's pretty much Matthews and the SF DEF for Dez Bryant and the Pitt DEF. Matthews has been such a tough play for me this year and I only need one flex position filled (i.e- Bush, Daniels, WR-du-jour). The trade is with the potential leader of the league whom I'm tied with. I noticed RB's are his weakness....Mendenhall (bye this week), Pierre Thomas (bye this week), Jahvid Best, Woodhead, and Donald Brown (bye this week). Giving him Matthews would obviously help him, as would adding Bryant to my stable of WR's. I'm just not sure if I'm thinking short-sighted or it's a good deal long-term too. He essentially has to pick up a RB and a defense off waivers in order to compete this week, which means dropping 2 players. With 3 weeks left in our season, equal records (he owns the tiebreaker), he's in a tough position. It's almost like not doing anything betters my team because he's got bad bye week blues.

Thoughts?? Advice??