Gasoline Engine problems of the 2006 Honda CR-V

When attempting to pass another vehicle I pressed the accelerator down, and starter around the other vehicle, when I had completed my passing, I released my foot from the accelerator, but it did not respond. I continued to pick up speed at full throttle. After jamming down hard on the accelerator it release the throttle back to the idle position. This is the 2nd time this has happened.

I purchased a Honda crv lx (4wd) in Nov'06 from fairfax Honda, va. The car had ~ 4400 miles on it when the incident occurred. We were driving near wheeling, wv returning back to fairfax, va. I was driving at about 35 miles per hour when the car suddenly slowed down as we were negotiating a mild curve and slope. Just over the top of the slope, the car abruptly stopped. The whole thing from slow-down to abrupt halt was 5-10 seconds. Initially I couldn't even get it to put it on neutral to get move it to the shoulder. After this it has turned out to be a very frustrating time with american Honda and the dealer. I have been told by the dealer that the engine has completely broken down and has to be replaced (still haven't told me what caused it). Being a new car with such low mileage, I asked american Honda and the dealer for a replacement. The case officer never called me inspite of dozens of calls (finally reached him on thurs). He actually got aggressive when I asked about the car replacement. He said that my request would never get approved and is a waste of time. He even explicitly said that he was giving me an "ultimatum" - "I'll give a new engine. Then take the 7-yr extended warranty I am giving now, or else I will give you nothing". When I shot back asking if he was threatening me, he refused to acknowledge. He said that he would still give the extended warranty even if the new car request was denied in a very angry tone and ended the conversation. The case number is n012006-07-03-01-018. The case officer's name is herbert webb. The service director from fairfax Honda (oscar) was not so aggressive but pretty much said the same things that herbert webb told (oscar had discussed the case with herb before this). I am extremely worried about the vehicle that it broke down so bad without a warning the first time we traveled more than 50 miles. It is even painful when the manufacturer and dealer are not even ready to consider my request. Please help.