After taking part in the most practice work he’s seen all offseason, Todd Heap believes he will be able to fully participate by the start of training camp. Heap has been limited in each of the Ravens’ minicamps thus far, rarely able to take the field because of a back injury that dates back to last year. But as he hauled in a Joe Flacco pass in the flat and quickly accelerated upfield, it seemed that Heap is nearing a full recovery.