Eagles Add Running Back

Still puzzling over the meaning of this.  From PE.com:

The Eagles have placed linebacker Omar Gaither on Injured Reserve, and have added running back P.J. Hill from the Saints practice squad to the active roster. Hill, a 5 feet 10, 218-pounder, had an outstanding career at Wisconsin, but was not drafted in April.

He was projected as a late-round draft pick, but had a pair of DUI incidents, one of which was dismissed. Hill was a four-year letterman for the Badgers who joined former Heisman Trophy winner Ron Dayne as the only backs in UW history to gain more than 1,000 yards in each of their first three seasons. He closed his career with 770 carries for 3,942 yards (5.1 avg.) with 42 TDs, and added 39 receptions for 358 yards and two scores.

Definitely a road block at his position in New Orleans, but do you leave a solid practice squad position for what could just be a one-week cup of coffee?  Have to think there was at least some assurance by the Eagles that he'd get a chance to stick around awhile.

Still thinking about this...

UPDATE:  From Sam: If you sign a ps guy, he has to be on the roster 3 weeks. In those 3 weeks, hill will make about 60 pct as he'd make all year on a ps.