I think what they ought to be more afraid of is what I witnessed at my county convention a couple days ago (the 14th).
A little background...
I've lived in this county for 14 years and in Texas awhile longer. I went to my first Texas GOP state convention in 1996 and I've been to most of them since.
The situation in Texas being what it is, the turnout on Saturday was mostly veteran GOP folks. And while no one was actively promoting a presidential candidate, the resolutions voting was remarkable. Like I said, this was mostly old-guard Bush republicans; frankly, people who I'd otherwise expect to be Romney supporters. But, contrary to my suppositions (because 4 years ago none of this would have happened), there was overwhelming support (as in 90% or better) for nearly all of the pro-liberty resolutions. We passed 20 resolutions including eliminate the Fed, abolish EPA, abolish DoEd, get out of the UN, etc. and many of the "mainline" people went to the mic in support of these measures.
I personally would put the odds at around 50/50 at this point for Ron Paul to decisively win Texas in May.
So get our people to the conventions, get anyone not registered to vote registered asap, get out the vote in May, and bring a large Texas delegation full of Ron Paul fans to Tampa = WE WIN!