At CES 2011 early January, Verizon announced their four 4G phones and a few other devices and claimed that they will be released "as early as March," which we found out recently to mean the 17th for the T-Bolt.
However, at CES T-Mobile and AT&T boasted their HSPA+ networks as "4G" and faster than any other 4G offerings available, along with very competitive devices such as the Atrix. The T-Bolt looked to pale in comparison, so Verizon tried its best to release the device a month early on February 14th.
However, no matter how hard they tried, they couldn't work out all the kinks in time for a 14th, 21st, 24th, or 28th release, and now it seems they said "eff it" and are going to release it on the original March 17th date just to be safe.
That being said, HTC is probably NOT pissed at Verizon for "delaying" the device since it never really got delayed in the first place; it's simply "not early" and "on time".
That Sentrix guy has a lot less credibility than Ben^5, so don't pay his ramblings any heed. Also, HTC is still advertising all weekend so that whole exchange about HTC threatening to pull adds if VZW didn't announce a release by Saturday was obviously bullcrap.