It appears that Hornibrook (who is strictly a guard, not a tackle) split time at LG with Barrett Miller while Branson Bragg was healthy at the RG spot. When Bragg went down, Hornibrook started at RG. Discussing Hornibrook as a possible RT replacement for Hinton therefore doesn't make sense. But...
Starting in week 6, Bragg played around 100 total snaps at RT. He replaced Hinton at RT against Wazzu (probably late in the game, not sure), then started the next 3 games at RT over Hinton before getting injured for the season. Hinton only played 13 and 16 snaps respectively in Bragg's 2 full games at RT. Simply put: Hinton lost his starting job mid-season, and only got it back due to Bragg's injury.
Thus, I have a sneaking suspicion Bragg may start at RT right out the gate this season, with Miller at LG and Hornibrook at RG. (Note that Bragg was held out of the spring game.) I very much hope this happens.
Starting in week 6, Bragg played around 100 total snaps at RT. He replaced Hinton at RT against Wazzu (probably late in the game, not sure), then started the next 3 games at RT over Hinton before getting injured for the season. Hinton only played 13 and 16 snaps respectively in Bragg's 2 full games at RT. Simply put: Hinton lost his starting job mid-season, and only got it back due to Bragg's injury.
Thus, I have a sneaking suspicion Bragg may start at RT right out the gate this season, with Miller at LG and Hornibrook at RG. (Note that Bragg was held out of the spring game.) I very much hope this happens.