This is the first piece of really good news for the Cowboys this week. Obviously, the team needs to not only get its game together on offense, but it also needs to contend with the Texans' offense. In week 1, the Texans led the league in rushing. In week 2, they led in passing. Obviously this is a complete team. Now, with their LT out, it opens the door for a more aggressive Dallas attack.
We know from the Bears game that the loss of a LT is not the death knell for a team. But we can gameplan around it. Likely, the Texans will need to give help to the LT in the form of TE or RB chips on Ware and Spencer. With Owen Daniels injured and on a limited snap count, they probably won't waste him on these plays. This means that the Cowboys will be better able to read passing packages and to take a weapon away from the passing attack.
As for the Texans running game, against the Colts Foster did a LOT of damage running the stretch play left. In fact, according to Football Outsiders, the Texans average 7.64 yards off left end and 6.03 yards off left tackle, but only 4.82 of right tackle and 4.50 off right end. I don't know how good of a run blocker Brown's replacement is, but he's the backup for a reason. This probably forces the Texans to be slightly more one-sided in their running, which again, helps the Dallas D focus in on stopping the zone play.
Also, we should be slightly better against the zone run since we saw the exact play two weeks ago against Washington. We held Washington's RBs to few yards until late in the game. Even then, we were able to contain them for no long gains. Foster is a much better back than Portis or Larry Johnson at this stage of their careers, but the practice will help.
So, we have a big of good news. To quote Herm Edwards: "We can build on this."