Smith isn't an explosive back, but he's solid and he's coming off a pretty good preseason for the Texans, who simply decided to go with younger players.
At 34, Smith doesn't have many years left, but he's certainly good for this season and he would represent an upgrade over Morris -- even if Morris hadn't been suspended.
Now, the Dolphins might have to fight other teams for Smith's services and also would have to agree to contract terms, but one potential competitor for his services was eliminated when the Rams signed former Redskins and Panthers running back Stephen Davis.
Also, other options are sure to follow this weekend as teams get down to the NFL roster limit of 53, but there are no guarantees. There also was very little available in terms of players without a team.
So right now, Smith sure looks like a viable option for the Dolphins.