Arch Manning set X ablaze over the weekend, as Texas’ redshirt freshman gunslinger fired bullet after bullet in the Longhorns’ spring game. A 75-yard strike on his first throw of the day. Another 75-yard bomb perfectly placed. A couple of well-placed passes that were dropped, including another likely touchdown. By the end of the afternoon, Manning was 19 of 25 for 355 yards and three scores. Predictably, many took to social media and pronounced that Texas suddenly had a quarterback controversy brewing. Head coach Steve Sarkisian immediately threw cold water on that notion, though, once again d…