I'm thinking the belt is not going to really jump close from its location.
Also I'd like to point out, that the nature of that "S" tube is that the braket that holds it in place is a little bit and bolt hole at its middle point. As can be seen in this pic:
I only mention this, because if the mechanic didn't push the one end into the LIM far enough(all it is a non-threaded pipe with an o-ring and groove) then the result is that the other end swings closer out towards your belt.
Now don't get all worried, cause I don't think that gap is too bad, but I WOULD keep an eye on the other end for leaks in case its not seated properly. (which if happens you would find easy to fix yourself with a few simple hand tools)
As far as the belt is concerned, take it out for a VERY spirited(short) drive, and then have a look under the hood for rub marks on the belt...