Is Arian Foster "back"?

Houston Texans fans were concerned and fantasy owners were skeptical about what to expect from Arian Foster this season after a back injury lingered all summer and into the preseason, at which point a hamstring injury limited him further. Despite the preseason issues, Foster looked pretty good the first three games of the regular season. However, Sunday against the stout Seattle Seahawks D, Foster went off for 102 rushing yards, while pulling in six passes for another 69 yards and a score. His 33 touches dwarfed his previous season-high workload of 24 touches in Week 1. Does this mean that Foster is "back"? Coach Gary Kubiak hinted Monday that may be the case.