TO hasn't had problems in his own lockerroom, besides last years blowup with Garcia and the resulting blowup with the coordinator. In fact, it was under Marty Mornhinweg's (Former offensive coordinator at SF, 1997-2000) recommendation on his lockerroom behavior. Outside of Garcia, TO's generally liked in his own lockerroom. It's the oppositions lockerroom that typically hates him because of his antics.
And yes, Winfield was a huge addition. I'm not as high on him as some, but comparatively it's a huge upgrade. I think we should be able to run the ball though, and our TE's could have another HUGE day. Especially in the Red Zone, where they (before this year) were the #1 target for McNabb.