I'm no good at the math and I have no reference point for a free fall time from the ISS or something of notable distance. But when you're this high, the gravity of earth is not as substantial, but does increase as you get closer to the surface. For example at 40km at the equate we see a loss of 1.2% from just a airliner jet.
http://www.mansfieldct.org/Schools/MMS/staff/hand/lawsgravaltitude.htmFelix Baumgartner actually dives from Earth's upper most atmospheric boundary (able to be reached by a balloon at 23 miles) and was able to reach Mach 1.24 (372.78666 mp/s) and experienced very little in his suit, and the only quote at temperatures range of protection was "100 degrees Fahrenheit to -90 degrees Fahrenheit" according to DCC (David Clark Company) that designed the suit. 100 degrees F is uncomfortable but not deadly.
From my understanding of 1/R for gravity by km, the specific gravity at the ISS should be 0.024... so specific speed of fall would be incredibly slow depending on the weight and mass of the person, and it wouldn't really increase much even at the atmospheric boundary of of 100km at 0.09g. And of course, you don't weigh much in micro gravity because of this gravity + interstellar mass vs individual mass relationship.
Most objects in space, even dust, burn up, because of the velocity they were launched at, or because of the distance they traveled in relation to their mass and gravitational influences - which is usually dozens and dozens times that of a fall from the ISS. Even debris being launched from work on the ISS is moving at 25 thousand + mph.
This is also why scientists have talked about how spaceships entering the atmosphere like in Independence Day isn't that realistic because these alien ships have anti-grav flight to begin with, and would be able to be at a stand still and enter the atmosphere at a rate that wouldn't cause damage.
Update: The only variable I think we aren't taking into consideration in this scenario is if you aren't traveling as fast as the ISS, are you traveling at the earths rotation? Cause if not, you're going to be interfering with the earths rotation which would change things/add friction. Especially if at a "complete" stand still while Earth is rotating at about 1,000 mph.
Additionally, I've done this KSP many times which is known for pretty good physics. You can stop a vehicles motion to 0/ms and it will fall to Kerbin (or Earth if you have real scale solar system mod) and not burn up. And that's with Kerbin/Earths rotation.