On Dec. 19 that year, McCusker climbed in the rebuilt TTV. He was towed up to test altitude safely and severed the tow line.
Things looked good at first as McCusker managed five minutes of controlled gliding before coming in for a landing. He managed a landing, but it was hard. He was traveling 30 feet per second when he hit the lakebed; the landing was considered a barely-controlled crash. The TTV wasn't built to sustain forces that high and McCusker ended up in hospital from the shock.
Again, the TTV was refurbished and a third pilot filled out the ranks of those who would fly the spacecraft: Jack Swigert. Swigert successfully piloted the TTV to a smooth runway landing early in 1965, then used the experience to bolster his chances at joining NASA astronaut corps. He did in 1966, flying as Command Module Pilot on Apollo 13.
Unfortunately, by the time gliding Gemini landings were perfected with the TTV it was too late for the Rogallo wing. After Gemini 3 flew in March 1965 NASA scrapped the runway landing system from the program and committed to splashdowns for every Gemini and Apollo mission. The TTV and to a large extent the Rogallo wing, has been left as little more than a footnote in NASA's history.