There are so many variables in there that if they believed Jones was their guy (a separate argument is whether his talent justifies that), they had to take him.
Well...just to make the discussiona bit more in depth...
No. Part of GMs job on draft day is figuring what other teams are about to do.
Thus....
If the team at 11 is offering something substantial to move to 6 it then behooves you to do a mock on 6-10. Also of course figuring who might deal up to 7-10 to get Jones
Smart money says Gettleman was too concerned Redskins wanted Jones and that is enough for the backers of Gettleman and the naysayers to strongly debate.
Or... could be nobody was dealing up (hard to believe) and of course Gettleman then had just 2 moves - take Jones or be Ok losing him before 17