My 2 cents.
You can tell Rhoads is a passionate guy when it comes to anything football related, and he should be. I believe he is boasting becuase he probably felt there was a real shot that Lazard would go elsewhere, and was legitimately worried about "The team in northern Indiana". Signing day showed up and he got the confirmation that Lazard was going to be a Cyclone and his passion bled through in his press conference.
Probably motivated because it is most likely the hightest rated recruit they have had in his tenure.
Recruiting is a battle for all schools, but even more so for those of Iowa States stature. When they get a highly rated guy it is probably a really good feeling. This to us would be similar to Jaylon Smith last year in my mind. A highly rated kid that everyone wants. Except in Iowa States case they aren't getting any 5* guys, and a guy like Lazard is a huge recruit for them. Our class is usually full of guys of his caliber, so it doesn't seem as big to us.