The unnamed man got lost and found himself without phone signal after being left by colleagues who went ahead without him, the Chaffee County Search and Rescue team said.
In their statement, officials said the hiker was left to reach the summit on his own at about 11:30 local time (17:30 GMT).
From another article:
“In what might cause some awkward encounters at the office in the coming days and weeks, one member of their party was left to complete his final summit push alone,” search and rescue officials said.
They left him behind.
In response to him "not listening" about being on the wrong trail:
Shortly after sending them a second message, a strong storm passed through the area, bringing "high winds and freezing rain" and leaving him without a signal.
From the other article:
The abandoned hiker finally reached the correct trail around 3:30 p.m. and texted his coworkers that he was back on course when a strong storm passed through the area with freezing rains and high winds, pushing him back off course and causing him to lose his cell phone signal, search and rescue officials said.