Given the rumors and hints surfacing here and elsewhere, that seems the simplest and most likely explanation. Occam's Razor.
Really not surprising that this reared its head finally (not specifically Gavin, but in general). Happens all the time in football, the wrestling team has been fortunate to dodge the bullet for some time. You bring in a dozen teenagers and you have to figure a few are going to fail miserably academically for a myriad of possible reasons.
Certainly not a death sentence for his career or degree aspirations either here or elsewhere. This post is authored by a guy who failed out of his first college spectacularly. Did alright my first semester, but when football season was over and I had quite a bit of free time on my hands I proceeded to deliver a Blutarsky in the spring.
Yup, 0.0.