Wyclif was heretical inasmuch as he attacked the Mass. Hus unfortunately, kept taunting the Church and using the example of Wyclif to wave at them. Not saying that they are correct, but they reacted to the level of opposition, and unfortunately, they violated their own statement of safe conduct and had Hus executed. Wyclif was never executed, tortured, imprisoned, or even arrested, by the way.
No, he was just tried posthumously, exhumed, his books and his long-buried remains burned, and the ashes strewn in the River Swift.
What was that all about anyway? I guess it could have been worse, his actual corpse could have been put on trial like Pope Formosus was in the infamous “Cadaver Synod.”
http://www.britannica.com/EBchecked/topic/87873/Cadaver-Synod