Martz may be hesitating on the Lions job because they recently hired Kippy Brown as receivers coach. Given Brown's recent track record with Texans' receivers and his stellar past as an XFL coach, I'm not sure Martz would want to watch the Detroit WRs take a step backward in their development. If I'm not mistaken, Brown was also the Dolphins OC under Jimmy Johnson when that team emphasized the run over the pass despite having Dan Marino at QB.
I pulled this from the Lions board. I believe the source is KFFL:"Lions | Martz impresses Millen
Mon, 30 Jan 2006 18:27:56 -0800
Jim Thomas, of the St. Louis Post-Dispatch, reports former St. Louis Rams head coach Mike Martz met with Detroit Lions team president Matt Millen about the team's offensive coordinator position again Monday, Jan. 30. League sources said that things went well with Millen; that Millen wants to hire Martz; and that Martz is interested in the job. If hired in Detroit, its possible Martz would be given the added title of assistant head coach. If Martz gets the Detroit job, it's very possible that he will take running backs coach Wilbert Montgomery with him. As noted earlier, Martz will interview with Lions head coach Rod Marinelli Tuesday, Jan. 31."
I don't any sense of cold feet by anyone involved, judging by that. Key phrase in there: Martz meet with Millen "AGAIN, Monday, Jan. 30..."