GLS-LVJ looks to be about 15 minutes so the pilot should have had a good 10 minutes to calm down and formulate a plan.
Does anyone know his intended destination? He, or at least the same plane, was apparently in and out of KLVJ within a couple weeks before the mishap flight. If his intended destination was KLVJ, it boggles the mind how he would need a magenta line to find it when he was already 1/3 of the way there. The total distance is 25 nm (barely half of what it would take to count toward a rating or certificate) so he was probably within 20 miles and pointed straight toward the place. Even the worst compass I've ever used in a plane would be sufficient to complete that flight without a GPS. Even without a compass, it shouldn't have been hard to simply fly in a generally forwards direction for 10 minutes.
The mishap-causing mistake here was following the 182 too closely. It's basic airmanship. Almost every plane is measurably faster than some other plane. I come over the fence at about 45 knots in the J-3. If this pilot had working flaps, a working radio, and no helmet fire, would he have been able to land behind a Cub without ruining someone's day?
The other ADM points that I hope the rest of us would have gotten better include:
1. If you don't know how to safely fly the plane without electric power (example: knowing the approach speed and sight picture for a no-flaps landing), don't take off immediately after a jump start. At least watch the electrical system on the ground to be sure it's charging the battery.
2. If you have an emergency 5 minutes after departure, consider turning 180 degrees either direction, especially if you need a magenta line to find any other airport. The conversation about having a hard time seeing the light gun signals is much less awkward than the one about running out of fuel trying to find an airport, chopping up someone's empennage, or even merely violating the Houston Class B airspace.
3. If you are NORDO, overfly the field at 1,500 AGL so you can observe the windsock, other traffic in the pattern, etc., and then make a normal pattern entry. Following the first plane you see on final (which it seems he did) at a distance too close for Airventure (where they have ATC and three runways to divide traffic among) is usually a bad idea for many reasons.